diff --git a/assets/app/index.ts b/assets/app/index.ts
index 0897364..b998955 100644
--- a/assets/app/index.ts
+++ b/assets/app/index.ts
@@ -1,2 +1,19 @@
-import "bootstrap";
+import * as bootstrap from "bootstrap";
 import "./bootstrap.ts";
+
+/**
+ * Initialize tooltips of Bootstrap
+ */
+document.addEventListener("turbo:load", () => {
+  const tooltipTriggerList = document.querySelectorAll("[data-bs-toggle=\"tooltip\"]");
+  const tooltipList = [...tooltipTriggerList].map(tooltipTriggerEl => new bootstrap.Tooltip(tooltipTriggerEl));
+
+  // Destroy tooltips on navigating to a new page
+  document.addEventListener("turbo:before-visit", () => {
+    for (const tooltip of tooltipList) {
+      tooltip.dispose();
+    }
+  }, {
+    once: true,
+  });
+});
diff --git a/assets/styles/app.scss b/assets/styles/app.scss
index 294eaa5..c8d6ace 100644
--- a/assets/styles/app.scss
+++ b/assets/styles/app.scss
@@ -120,7 +120,19 @@ ul.credit {
   }
 
   &__operations {
-    @extend .d-flex, .gap-2, .justify-content-start, .align-items-center;
+    @extend .d-flex, .gap-3, .justify-content-start, .align-items-center;
+  }
+
+  .question-card__pass-rate {
+    &[data-pass-rate~="high"] {
+      @extend .text-success;
+    }
+    &[data-pass-rate~="medium"] {
+      @extend .text-warning;
+    }
+    &[data-pass-rate~="low"] {
+      @extend .text-danger;
+    }
   }
 }
 
@@ -148,6 +160,15 @@ ul.credit {
     li {
       @extend .list-inline-item;
     }
+
+    &__pass_rate {
+      &__value {
+        @extend .text-body;
+
+        border-bottom: 1px dotted black;
+        text-decoration: none;
+      }
+    }
   }
 }
 
diff --git a/migrations/Version20241003162915.php b/migrations/Version20241003162915.php
new file mode 100644
index 0000000..e0c4f5d
--- /dev/null
+++ b/migrations/Version20241003162915.php
@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20241003162915 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Login Event';
+    }
+
+    public function up(Schema $schema): void
+    {
+        // this up() migration is auto-generated, please modify it to your needs
+        $this->addSql('CREATE TABLE login_event (id UUID NOT NULL, account_id INT NOT NULL, created_at TIMESTAMP(0) WITHOUT TIME ZONE NOT NULL, PRIMARY KEY(id))');
+        $this->addSql('CREATE INDEX IDX_3DDECD339B6B5FBA ON login_event (account_id)');
+        $this->addSql('COMMENT ON COLUMN login_event.id IS \'(DC2Type:ulid)\'');
+        $this->addSql('COMMENT ON COLUMN login_event.created_at IS \'(DC2Type:datetime_immutable)\'');
+        $this->addSql('ALTER TABLE login_event ADD CONSTRAINT FK_3DDECD339B6B5FBA FOREIGN KEY (account_id) REFERENCES "user" (id) NOT DEFERRABLE INITIALLY IMMEDIATE');
+    }
+
+    public function down(Schema $schema): void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->addSql('CREATE SCHEMA public');
+        $this->addSql('ALTER TABLE login_event DROP CONSTRAINT FK_3DDECD339B6B5FBA');
+        $this->addSql('DROP TABLE login_event');
+    }
+}
diff --git a/src/Controller/Admin/DashboardController.php b/src/Controller/Admin/DashboardController.php
index 811055c..c6c8eb1 100644
--- a/src/Controller/Admin/DashboardController.php
+++ b/src/Controller/Admin/DashboardController.php
@@ -8,6 +8,7 @@
 use App\Entity\CommentLikeEvent;
 use App\Entity\Group;
 use App\Entity\HintOpenEvent;
+use App\Entity\LoginEvent;
 use App\Entity\Question;
 use App\Entity\Schema;
 use App\Entity\SolutionEvent;
@@ -54,5 +55,6 @@ public function configureMenuItems(): iterable
         yield MenuItem::linkToCrud('SolutionEvent', 'fa fa-check', SolutionEvent::class);
         yield MenuItem::linkToCrud('SolutionVideoEvent', 'fa fa-video', SolutionVideoEvent::class);
         yield MenuItem::linkToCrud('HintOpenEvent', 'fa fa-lightbulb', HintOpenEvent::class);
+        yield MenuItem::linkToCrud('LoginEvent', 'fa fa-sign-in', LoginEvent::class);
     }
 }
diff --git a/src/Controller/Admin/LoginEventCrudController.php b/src/Controller/Admin/LoginEventCrudController.php
new file mode 100644
index 0000000..2d84e3e
--- /dev/null
+++ b/src/Controller/Admin/LoginEventCrudController.php
@@ -0,0 +1,44 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Controller\Admin;
+
+use App\Entity\LoginEvent;
+use EasyCorp\Bundle\EasyAdminBundle\Config\Action;
+use EasyCorp\Bundle\EasyAdminBundle\Config\Actions;
+use EasyCorp\Bundle\EasyAdminBundle\Config\Crud;
+use EasyCorp\Bundle\EasyAdminBundle\Config\Filters;
+use EasyCorp\Bundle\EasyAdminBundle\Controller\AbstractCrudController;
+use EasyCorp\Bundle\EasyAdminBundle\Field\AssociationField;
+use EasyCorp\Bundle\EasyAdminBundle\Field\DateTimeField;
+use EasyCorp\Bundle\EasyAdminBundle\Field\IdField;
+
+class LoginEventCrudController extends AbstractCrudController
+{
+    public static function getEntityFqcn(): string
+    {
+        return LoginEvent::class;
+    }
+
+    public function configureFields(string $pageName): iterable
+    {
+        return [
+            IdField::new('id', 'ID'),
+            AssociationField::new('account', 'Account'),
+            DateTimeField::new('createdAt', 'Created at'),
+        ];
+    }
+
+    public function configureFilters(Filters $filters): Filters
+    {
+        return $filters->add('account');
+    }
+
+    public function configureActions(Actions $actions): Actions
+    {
+        return $actions
+            ->disable(Action::DELETE, Action::EDIT, Action::NEW)
+            ->add(Crud::PAGE_INDEX, Action::DETAIL);
+    }
+}
diff --git a/src/Entity/LoginEvent.php b/src/Entity/LoginEvent.php
new file mode 100644
index 0000000..a006274
--- /dev/null
+++ b/src/Entity/LoginEvent.php
@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Entity;
+
+use App\Repository\LoginEventRepository;
+use Doctrine\ORM\Mapping as ORM;
+
+#[ORM\Entity(repositoryClass: LoginEventRepository::class)]
+class LoginEvent extends BaseEvent
+{
+    #[ORM\ManyToOne(inversedBy: 'loginEvents')]
+    #[ORM\JoinColumn(nullable: false)]
+    private ?User $account = null;
+
+    public function getAccount(): ?User
+    {
+        return $this->account;
+    }
+
+    public function setAccount(?User $account): static
+    {
+        $this->account = $account;
+
+        return $this;
+    }
+}
diff --git a/src/Entity/Question.php b/src/Entity/Question.php
index 3474022..2c085f5 100644
--- a/src/Entity/Question.php
+++ b/src/Entity/Question.php
@@ -176,6 +176,44 @@ public function setSolutionVideo(?string $solution_video): static
         return $this;
     }
 
+    /**
+     * Get the pass rate of the question.
+     *
+     * @return float the pass rate of the question
+     */
+    public function getPassRate(): float
+    {
+        $totalAttemptCount = $this->getTotalAttemptCount();
+        if (0 === $totalAttemptCount) {
+            return 0;
+        }
+
+        return round($this->getTotalSolvedCount() / $totalAttemptCount * 100, 2);
+    }
+
+    /**
+     * Get the total number of attempts made on the question.
+     *
+     * @return int the total number of attempts made on the question
+     */
+    public function getTotalAttemptCount(): int
+    {
+        return $this->getSolutionEvents()->count();
+    }
+
+    /**
+     * Get the total number of times the question has been solved.
+     *
+     * @return int the total number of times the question has been solved
+     */
+    public function getTotalSolvedCount(): int
+    {
+        return $this->getSolutionEvents()
+            ->filter(
+                fn (SolutionEvent $solutionEvent) => SolutionEventStatus::Passed === $solutionEvent->getStatus()
+            )->count();
+    }
+
     /**
      * @return Collection<int, SolutionEvent>
      */
diff --git a/src/Entity/User.php b/src/Entity/User.php
index 0447e39..8d0f586 100644
--- a/src/Entity/User.php
+++ b/src/Entity/User.php
@@ -76,6 +76,12 @@ class User implements UserInterface, PasswordAuthenticatedUserInterface
     #[ORM\OneToMany(targetEntity: HintOpenEvent::class, mappedBy: 'opener', orphanRemoval: true)]
     private Collection $hintOpenEvents;
 
+    /**
+     * @var Collection<int, LoginEvent>
+     */
+    #[ORM\OneToMany(targetEntity: LoginEvent::class, mappedBy: 'account', orphanRemoval: true)]
+    private Collection $loginEvents;
+
     public function __construct()
     {
         $this->solutionEvents = new ArrayCollection();
@@ -83,6 +89,7 @@ public function __construct()
         $this->comments = new ArrayCollection();
         $this->commentLikeEvents = new ArrayCollection();
         $this->hintOpenEvents = new ArrayCollection();
+        $this->loginEvents = new ArrayCollection();
     }
 
     public function getId(): ?int
@@ -343,4 +350,34 @@ public function removeHintOpenEvent(HintOpenEvent $hintOpenEvent): static
 
         return $this;
     }
+
+    /**
+     * @return Collection<int, LoginEvent>
+     */
+    public function getLoginEvents(): Collection
+    {
+        return $this->loginEvents;
+    }
+
+    public function addLoginEvent(LoginEvent $loginEvent): static
+    {
+        if (!$this->loginEvents->contains($loginEvent)) {
+            $this->loginEvents->add($loginEvent);
+            $loginEvent->setAccount($this);
+        }
+
+        return $this;
+    }
+
+    public function removeLoginEvent(LoginEvent $loginEvent): static
+    {
+        if ($this->loginEvents->removeElement($loginEvent)) {
+            // set the owning side to null (unless already changed)
+            if ($loginEvent->getAccount() === $this) {
+                $loginEvent->setAccount(null);
+            }
+        }
+
+        return $this;
+    }
 }
diff --git a/src/EventSubscriber/LoginSubscriber.php b/src/EventSubscriber/LoginSubscriber.php
new file mode 100644
index 0000000..d3d3040
--- /dev/null
+++ b/src/EventSubscriber/LoginSubscriber.php
@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\EventSubscriber;
+
+use App\Entity\LoginEvent;
+use App\Entity\User;
+use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+use Symfony\Component\Security\Core\Event\AuthenticationSuccessEvent;
+
+class LoginSubscriber implements EventSubscriberInterface
+{
+    public function __construct(
+        private readonly EntityManagerInterface $entityManager,
+    ) {
+    }
+
+    public function onSecurityAuthenticationSuccess(AuthenticationSuccessEvent $event): void
+    {
+        $user = $event->getAuthenticationToken()->getUser();
+        \assert($user instanceof User);
+
+        $loginEvent = (new LoginEvent())
+            ->setAccount($user);
+
+        $this->entityManager->persist($loginEvent);
+        $this->entityManager->flush();
+    }
+
+    public static function getSubscribedEvents(): array
+    {
+        return [
+            'security.authentication.success' => 'onSecurityAuthenticationSuccess',
+        ];
+    }
+}
diff --git a/src/Repository/LoginEventRepository.php b/src/Repository/LoginEventRepository.php
new file mode 100644
index 0000000..a95feb0
--- /dev/null
+++ b/src/Repository/LoginEventRepository.php
@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Repository;
+
+use App\Entity\LoginEvent;
+use App\Entity\User;
+use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
+use Doctrine\Persistence\ManagerRegistry;
+
+/**
+ * @extends ServiceEntityRepository<LoginEvent>
+ */
+class LoginEventRepository extends ServiceEntityRepository
+{
+    public function __construct(ManagerRegistry $registry)
+    {
+        parent::__construct($registry, LoginEvent::class);
+    }
+
+    public function getLoginCount(User $user): int
+    {
+        $loginCount = $this->createQueryBuilder('l')
+            ->select('COUNT(l.id)')
+            ->andWhere('l.account = :user')
+            ->setParameter('user', $user)
+            ->getQuery()
+            ->getSingleScalarResult();
+
+        \assert(\is_int($loginCount));
+
+        return $loginCount;
+    }
+}
diff --git a/src/Twig/Components/Questions/Card.php b/src/Twig/Components/Questions/Card.php
index 860d3ca..0b64468 100644
--- a/src/Twig/Components/Questions/Card.php
+++ b/src/Twig/Components/Questions/Card.php
@@ -11,4 +11,22 @@
 final class Card
 {
     public Question $question;
+
+    /**
+     * Get the pass rate level of the question.
+     *
+     * Low: 0% - 40%
+     * Medium: 41 – 70%
+     * High: 71% - 100%
+     */
+    public function getPassRateLevel(): string
+    {
+        $passRate = $this->question->getPassRate();
+
+        return match (true) {
+            $passRate <= 40 => 'low',
+            $passRate <= 70 => 'medium',
+            default => 'high',
+        };
+    }
 }
diff --git a/templates/components/Challenge/Header.html.twig b/templates/components/Challenge/Header.html.twig
index 3c95f65..576cc33 100644
--- a/templates/components/Challenge/Header.html.twig
+++ b/templates/components/Challenge/Header.html.twig
@@ -3,6 +3,14 @@
     <ul class="challenge-header__lists">
         <li class="challenge-header__lists__difficulty">{{ question.difficulty|trans }}</li>
         <li class="challenge-header__lists__type">{{ question.type }}</li>
+        <li class="challenge-header__lists__pass_rate">
+            通過率
+            <a class="challenge-header__lists__pass_rate__value" href="#" rel="help" data-bs-toggle="tooltip"
+               data-bs-placement="bottom"
+               data-bs-title="{{ question.totalAttemptCount }} 次挑戰中有 {{ question.totalSolvedCount }} 次成功">
+                {{ question.passRate }}%
+            </a>
+        </li>
     </ul>
 
     <div class="d-flex justify-content-between align-items-end mt-1">
diff --git a/templates/components/Questions/Card.html.twig b/templates/components/Questions/Card.html.twig
index d006cca..be75378 100644
--- a/templates/components/Questions/Card.html.twig
+++ b/templates/components/Questions/Card.html.twig
@@ -11,6 +11,7 @@
 
             <div class="question-card__operations">
                 <a role="button" class="btn btn-primary" href="{{ path('app_challenge', {id: question.id}) }}">進行測驗</a>
+                <div class="question-card__pass-rate" data-pass-rate="{{ this.passRateLevel }}">通過率 {{ question.passRate }}%</div>
             </div>
 
             <div class="question-card__background">
diff --git a/templates/profile/index.html.twig b/templates/profile/index.html.twig
index 60841a7..ba73f51 100644
--- a/templates/profile/index.html.twig
+++ b/templates/profile/index.html.twig
@@ -40,6 +40,10 @@
                     <i class="bi bi-eye-fill"></i>
                     觀看影片次數：{{ user.solutionVideoEvents.count }}
                 </li>
+                <li class="list-group-item">
+                    <i class="bi bi-box-arrow-in-right"></i>
+                    登入次數：{{ user.loginEvents.count }}
+                </li>
             </ul>
         </turbo-frame>
 
diff --git a/translations/messages.zh_TW.yaml b/translations/messages.zh_TW.yaml
index 4641c2d..56fd815 100644
--- a/translations/messages.zh_TW.yaml
+++ b/translations/messages.zh_TW.yaml
@@ -44,6 +44,8 @@ Back to App: 返回 App
 Reindex: 進行搜尋索引
 HintOpenEvent: 提示打開事件
 Response: 回應
+LoginEvent: 登入事件
+Account: 帳號
 
 challenge.error-type.user: 輸入錯誤
 challenge.error-type.server: 伺服器錯誤