Here are a few options for a WordPress post_tag description for “手機版” (which means “Mobile Version” in Traditional Chinese), along with considerations for each:

**Option 1 (Short and Sweet):**

* **Description:** 手機版內容，方便您在手機上閱讀和瀏覽。 (Mobile version content, convenient for you to read and browse on your phone.)

* **Why it’s good:** Concise and directly relevant. Clearly explains the purpose of the tag.
* **Best for:** When you want a brief explanation.

**Option 2 (Slightly More Descriptive):**

* **Description:** 專為手機用戶打造的內容，包括優化的排版、尺寸調整和便捷的導航，確保您在手機上的手機版內容都能有最佳閱讀體驗。 (Content designed specifically for mobile users, including optimized layout, size adjustments, and convenient navigation, ensuring you have the best reading experience on your phone.)

* **Why it’s good:** Provides more detail about what “mobile version” entails, hinting at responsive design and user-friendliness.
* **Best for:** Communicating the effort made to optimize content for mobile devices.

**Option 3 (Focus on User Experience):**

* **Description:** 隨時隨地，輕鬆瀏覽！本標籤下的內容，確保您在手機上也能輕鬆獲取和閱讀最新資訊，提供最佳手機瀏覽體驗。 (Read easily anytime, anywhere! The content under this tag ensures you can easily access and read the latest information on your phone, providing the best mobile browsing experience.)

* **Why it’s good:** Emphasizes the user’s perspective and the benefits of mobile browsing.
* **Best for:** When user experience is a key selling point.

**Option 4 (Technical – if relevant to your site):**

* **Description:** 針對手機螢幕優化的網頁版本。方便您在手機上快速瀏覽，包括調整大小和優化圖片。 此標籤的文章都針對手机螢幕做了優化。 (Web versions optimized for phone screens. Easy for you to quickly browse on your phone, including resizing and optimizing images. Articles in this tag have been optimized for phone screens.)

* **Why it’s good:** More Technical explanation of what is behind the the mobile experience.
* **Best for:** If you want to hint the developers efforts behind the mobile site and can indicate the work they did.

**How to Choose:**

Consider:

* **Your Audience:** Who are your readers? Are they tech-savvy or more casual? Tailor the description to them.
* **The Level of Detail Needed:** Do you want to be very specific about the mobile optimization, or a general overview suffice?
* **Your Website’s Style:** Maintain consistency with your overall tone and voice.

**Where to put the Description in WordPress:**

1. **Go to the Tags Section:** In your WordPress admin dashboard, go to “Posts” > “Tags.”
2. **Find the Tag:** Locate the “手機版” tag in your list.
3. **Edit the Tag:** Click on the tag’s name or the “Edit” link.
4. **Add the Description:** You’ll see a field labeled “Description.” Paste your chosen description into this field.
5. **Update the Tag:** Click the “Update” button to save your changes.

Choose the option that best fits your needs and your website’s style. Good luck!