Please address the comments from this code review:
## Overall Comments
- In getDate(), you’re calling new Date() multiple times and always returning the current year in countdown mode—consider using a single Date instance and properly computing a year delta when countDown is true.
- The new ShowYear localization keys (e.g. ShowYear_Description, ShowYearText, ShowYearIntro) don’t appear to be added to en-US.json/zh-CN.json—please include those entries so the sample renders correctly.

## Individual Comments

### Comment 1
<location> `src/BootstrapBlazor/Components/FlipClock/FlipClock.razor:8` </location>
<code_context>
 <div @attributes="@AdditionalAttributes" class="@ClassString" style="@StyleString" id="@Id">
+    @if (ShowYear)
+    {
+        <div class="bb-flip-clock-list year">
+            @RenderItem(10)
+            @RenderItem(10)
</code_context>

<issue_to_address>
DRY up repeating @RenderItem calls

Consider replacing the repeated `@RenderItem(10)` lines with a `@for` loop to eliminate duplication and improve maintainability.
</issue_to_address>

<suggested_fix>
<<<<<<< SEARCH
        <div class="bb-flip-clock-list year">
            @RenderItem(10)
            @RenderItem(10)
            @RenderItem(10)
            @RenderItem(10)
        </div>
=======
        <div class="bb-flip-clock-list year">
            @for (var i = 0; i < 4; i++)
            {
                @RenderItem(10)
            }
        </div>
>>>>>>> REPLACE

</suggested_fix>

### Comment 2
<location> `src/BootstrapBlazor/Components/FlipClock/FlipClock.razor.js:127` </location>
<code_context>
     }
 }

+const setYear = (list, year, countDown) => {
+    if (list) {
+        list.classList.remove('flip');
</code_context>

<issue_to_address>
Consider refactoring the repeated time unit update logic into a generic helper and loop to reduce duplication and centralize state management.

Here’s one way to collapse the repeated “year/month/day/…” logic into a small generic loop and helper, while only ever calling new Date() once:

```js
// 1) Replace setTime + setYear with a single generic:
const setDigits = (list, value, digits, countDown) => {
  if (!list) return;
  list.classList.remove('flip');
  for (let i = 0; i < digits; i++) {
    const place = digits - 1 - i;
    const digit = Math.floor(value / 10 ** place) % 10;
    setFlip(list.children[i], digit, countDown);
  }
  list.classList.add('flip');
};

// 2) In your initializer, build a config array and shared last-state:
const unitConfig = [
  { key: 'years',  list: el.querySelector('.bb-flip-clock-list.year'),   digits: 4 },
  { key: 'months', list: el.querySelector('.bb-flip-clock-list.month'),  digits: 2 },
  { key: 'days',   list: el.querySelector('.bb-flip-clock-list.day'),    digits: 2 },
  { key: 'hours',  list: el.querySelector('.bb-flip-clock-list.hour'),   digits: 2 },
  { key: 'minutes',list: el.querySelector('.bb-flip-clock-list.minute'), digits: 2 },
  { key: 'seconds',list: el.querySelector('.bb-flip-clock-list.second'), digits: 2 },
];

const lastValues = {}; // will hold lastValues.years, .months, …

// 3) Simplify getDate() to a single Date() call:
const getDate = () => {
  if (!countDown && !options.fixed) {
    const now = new Date();
    return {
      years:   now.getFullYear(),
      months:  now.getMonth() + 1,
      days:    now.getDate(),
      hours:   now.getHours(),
      minutes: now.getMinutes(),
      seconds: now.getSeconds()
    };
  }
  // … your existing elapsed / countdown logic returning the same shape …
};

// 4) Collapse go() into one small loop:
const go = () => {
  const d = getDate();
  unitConfig.forEach(({ key, list, digits }) => {
    const v = d[key];
    if (lastValues[key] !== v) {
      lastValues[key] = v;
      setDigits(list, v, digits, countDown);
    }
  });
  return d;
};
```

Benefits:

- No more separate `setYear` vs `setTime`.
- Only one `new Date()` per tick.
- All “lastX” state lives in a single object.
- Adding/removing units (e.g. weeks) is just editing `unitConfig`.
</issue_to_address>

Please address the comments from this code review:
## Overall Comments
- It appears the locale files weren’t updated with the new ShowYear and ShowYear_Description keys—please add them to both en-US.json and zh-CN.json.
- Several DemoBlock examples for month/day/hour/minute/second were removed from FlipClocks.razor—please restore them (or confirm the intent) so existing usage demos aren’t lost.