Here are a few options for a description of the WordPress tag “Facebook” in Traditional Chinese, along with explanations of why they work:

**Option 1 (Direct & Simple):**

* **Description:** 脸书 (Liǎnshū) – 全球最大的社交平台。 (Facebook – The world’s largest social media platform.)

* **Why it works:**
* Uses the direct translation, “**脸书 (Liǎnshū)**,” the common name for Facebook in Chinese.
* Provides a concise and informative explanation of what the tag represents.
* Clear and suitable for general audience.

**Option 2 (More Descriptive):**

* **Description:** 分享个人和朋友动态的社交网络，全球使用者超过数十亿。 (A social network for sharing personal and friend updates, with billions of users worldwide.)

* **Why it works:**
* Focuses on Facebook’s function.
* Highlights the scale of Facebook’s user base.

**Option 3 (Keyword-Rich):**

* **Description:** 与朋友、家人联系，分享照片、视频，参与社群讨论的社交平台。 包含Facebook、脸书、社群网络、社交媒体。 (A social platform to connect with friends and family, share photos and videos, and participate in community discussions. Includes Facebook, 脸书, social network, and social media.)

* **Why it works:**
* Keywords such as “社交平台,” “社交媒体” are included.
* Incorporates alternative names (“脸书”).
* Good for SEO.

**Choice Recommendation:**

The best option depends on your website’s goals:

* **Most Generally Applicable:** Option 1 is excellent for most blogs, as it’s clear, brief, and familiar.
* **For Detailed Purpose:** Option 3 is useful if you’re specifically trying to improve search engine optimization for the tag page.

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

1. **Go to:** Posts > Tags in your WordPress dashboard.
2. **Find the “Facebook” tag.** Either edit an existing one, or create a new one.
3. **Look for the “Description” field.** (If you don’t see this in your WordPress version, you might need to enable it. Go to *Screen Options* at the top-right of your Tag listing and ensure “Description” is checked.)
4. **Paste your chosen description in the description field.**
5. **Update/Save the tag.**

Remember to use Simplified Chinese or Traditional Chinese options based on the website’s requirements. If a website employs traditional Chinese, the description would be posted in traditional Chinese.