diff --git a/docs/api-documents/configuration.md b/docs/api-documents/configuration.md
index 75aef04..a6add87 100644
--- a/docs/api-documents/configuration.md
+++ b/docs/api-documents/configuration.md
@@ -76,7 +76,27 @@ There are 2 useful fields.
   - `log`: redirect log message from test cases to unittest framework. It will be showed in failed info.
     ::: details
 
+    as-test.config.js:
+
+    ```javascript
+    module.exports = {
+      imports(runtime) {
+        return {
+          env: {
+            log: (msg) => {
+              runtime.framework.log(runtime.exports.__getString(msg));
+            },
+          },
+        };
+      },
+    }
+    ```
+
+    unit test:
+
     ```typescript
+    import { log } from "./env";
+
     test("failed test", () => {
       log("This is a log message for the failed test."); // log to be redirect
       expect(1 + 1).equal(3);
diff --git a/docs/release-note.md b/docs/release-note.md
index c187372..fe516a2 100644
--- a/docs/release-note.md
+++ b/docs/release-note.md
@@ -12,6 +12,13 @@
   - Expose the framework's `log` function in the configuration file, and the logs redirected to this function will be appended to the final test report.
   - Support test crashes and provide good call stack information.
 
+Improvements
+
+- Code coverage calculation.
+  - Skip type definitions.
+  - Treat switch case correctly.
+- Reduced test execution time and memory overhead.
+
 🔄 Arch Changes
 
 - During testing, the framework will execute all `test` functions once, but will not trigger callbacks, thereby collecting all test cases and then executing the test cases in sequence.