Here are a few options for a WordPress post_tag description in Traditional Chinese for the tag “市話” (shì huà, City Phone):

**Option 1: Short & Sweet**

> 市話：用於住宅和辦公室的固定電話。 (City Phone: Fixed-line phones for homes and offices.)

* **Why it’s good:** Concise, easily understood. Directly defines the subject.

**Option 2: Slightly More Descriptive**

> 市話標籤下的文章，涉及使用有線電話進行通訊和聯繫的相關主題，例如家庭電話、辦公室電話、及相關費用與服務。 (Articles tagged with City Phone, covering topics related to communication and contact using wired telephones, such as home phones, office phones, and related fees and services.)

* **Why it’s good:** Provides more context about the topics covered under this tag. Useful if the content is varied.

**Option 3: Focusing on Utility**

> 關於傳統市話技術、接聽方式，以及在智能手機普及的情況下，市話依然有其使用價值等文章。 (Articles about traditional city phone technology, answering methods, and the continued usefulness of city phones even with the popularity of smartphones.)

* **Why it’s good:** Highlights the practical aspects of the tag and some potential use cases.

**Option 4: A bit more descriptive and historical (If relevant to your content)**

> 市話是早期通訊的重要方式，標示著使用有線電話的相關文章，包括撥號流程、通話費用、電話號碼的歷史，以及市話在現代仍扮演的角色。 (City Phone: An important method of communication in the past. This tag marks articles about using wired telephones, including the dialing process, call charges, the history of phone numbers, and the role of city phones even in modern times.)

* **Why it’s good:** Gives a sense of context and history.

**How to choose the best option:**

* **Consider your content:** Which description best reflects the articles you’ll be tagging with “市話”?
* **Keep it concise:** While descriptive is good, aim for readability and easy understanding.
* **Think about your audience:** Who are you trying to reach with this tag?

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

1. Go to **Posts > Tags** (or **文章 > 標籤** in Chinese WordPress).
2. Find the tag “市話” in the tag list.
3. Click the “Edit” (編輯) link for that tag.
4. In the “Description” field (描述), paste the chosen description.
5. Click “Update” (更新) to save the changes.

Remember to check your theme’s styling to see where and how the tag descriptions are displayed. Good luck!