Here are a few options for a WordPress post tag description for “7-12歲” (7-12 years old) in Traditional Chinese, with slightly different nuances depending on your target audience and the content of your posts:

**Option 1 (Concise & General):**

> 這個標籤收錄了適合7-12歲兒童的文章和內容。
>
> (Zhè ge biāoqiān shōulù le shìhé 7-12 suì értóng de wénzhāng hé nèiróng.)
>
> *Translation:* Articles and content suitable for children aged 7-12 years are included in this tag.

**Option 2 (Focus on Education & Learning):**

> 涵蓋7-12歲兒童的學習、成長和發展相關的文章。
>
> (Hángài 7-12 suì értóng de xuéxí, chéngzhǎng hé fāzhǎn xiāngguān de wénzhāng.)
>
> *Translation:* Articles related to the learning, growth, and development of children aged 7-12 are covered.

**Option 3 (More Specific & Engaging):**

> 專為7-12歲小朋友準備的！分享有趣的故事、遊戲、知識及其他精彩內容。
>
> (Zhuān wèi 7-12 suì xiǎopéngyǒu zhǔnbèi de! Fēnxiǎng yǒuqù de gùshì, yóuxì, zhīshi jí qítā jīngcǎi nèiróng.)
>
> *Translation:* Specially prepared for children aged 7-12! Sharing interesting stories, games, knowledge, and other exciting content.

**Option 4 (For parents & caregivers):**

> 適合7-12歲兒童的內容，幫助家長和照顧者了解孩子的需求和發展。
>
> (Shìhé 7-12 suì értóng de nèiróng, bāngzhù jiāzhǎng hé zhàogùzhě liǎojiě háizi de xūqiú hé fāzhǎn.)
>
> *Translation:* Content suitable for children aged 7-12, helping parents and caregivers understand the needs and development of their children.

**Which one should you choose?**

* **Consider your website’s overall theme.** If your site is educational, option 2 is good. If it’s family-focused, option 4 might be ideal.
* **Think about the content you’ll be tagging.** Is it mostly storytelling, educational articles, activity guides, or something else? Tailor the description to match.
* **Keep it concise and easy to understand.**

**How to insert the description in WordPress:**

1. **Go to your WordPress dashboard.**
2. **Navigate to Posts > Tags** (or Categories if you’re using categories instead of tags).
3. **Find the tag “7-12歲”** and click on “Edit”.
4. **Look for the “Description” field.** (If you don’t see it, make sure it’s enabled in your Screen Options at the top right of the page.) If you don’t see a ‘Description’ field, you might need to enable that option in your screen options. Click on Screen Options at the top right of the page and check “Description”.
5. **Paste your chosen description into the Description field.**
6. **Click “Update”.**

Good luck!