Here are a few options for the WordPress post tag description, depending on the level of detail and focus:

**Option 1: Concise & Clear**

“`
描述：關於「openpoint積點」相關的文章，例如：如何賺取點數、兌換獎勵、點數優惠等等。
“`

* **Translation:** Articles related to “openpoint points” such as: how to earn points, redeem rewards, point promotions, and so on.
* **Best for:** General use, quickly explaining what the tag encompasses.

**Option 2: More Detailed & Informative**

“`
描述：這個標籤涵蓋所有關於統一超商（7-Eleven）會員獎勵計畫「openpoint積點」的資訊。 包含：點數累積方法、點數使用方式、點數期限、合作店家、優惠活動、紅利兌換、以及常見問題解答。
“`

* **Translation:**
This tag covers all information about the Uni-President (7-Eleven) member reward program “openpoint points.” Including: how to accumulate points, how to use points, points expiry dates, partner merchants, promotional activities, reward redemptions, and frequently asked questions.
* **Best for:** Providing a comprehensive overview, especially if the blog covers the topic extensively.

**Option 3: Focusing on Content Type**

“`
描述：分享關於 openpoint 點數策略與使用的部落格文章、教學、評測、以及實用指南。 幫助你最大化你的 openpoint 點數價值。
“`

* **Translation:**
Sharing blog posts, tutorials, reviews, and practical guides about openpoint points strategies and usage. Helping you maximize the value of your openpoint points.
* **Best for:** Highlighting the type of content associated with the tag. Suggests a more in-depth, informative approach to the subject matter.

**Option 4: Keyword-Focused**

“`
描述：openpoint, 積點, 7-Eleven, 點數, 紅利, 兌換, 優惠, 賺點, 應用程式, 點數快報，所有關於 openpoint 積點的資訊都在這裡！
“`

* **Translation:**
openpoint, points, 7-Eleven, points, bonus points, redemption, promotions, earn points, app, points updates, all the information about openpoint points is here!
* **Best for:** Improving search engine optimization (SEO) on the tag page by incorporating important keywords. (Use with caution, as keyword stuffing can be detrimental).

**How to Use in WordPress:**

1. **Go to Posts > Tags** in your WordPress admin panel.
2. **Create a new tag** or edit the existing one. (If it doesn’t exist, create it and enter “openpoint積點” as the tag name)
3. **In the “Description” field**, enter your chosen description from above.
4. **Save/Update** the tag.

**Recommendation:**

For general use and good SEO, I recommend a combination of the first and fourth options:

“`
描述：關於「openpoint積點」相關的文章，例如：如何賺取點數、兌換獎勵、點數優惠等等。 openpoint, 積點, 7-Eleven, 點數, 紅利, 兌換, 優惠, 賺點, 應用程式, 點數快報。
“`

This provides a clear explanation while still containing relevant keywords. Adjust the keyword list as needed based on your specific content. Good luck!