Here are a few options for the WordPress post tag description, along with explanations:

**Option 1 (Concise and Effective):**

* **描述 (Description):** 有關台灣銀行發行的信用卡產品資訊及相關議題。 (Information and related issues regarding credit card products issued by Taiwanese banks.)

* **Why it’s good:** Directly explains the subject matter (bank credit cards) and hints at the scope (product information and related topics). It’s clear and to the point.
* **Target Audience:** Suitable for a broad audience looking for information about bank-issued credit cards.

**Option 2 (Slightly more detailed):**

* **描述 (Description):** 涵蓋各種銀行信用卡、優惠活動、使用技巧、權益比較等相關資訊。 (Includes information related to various bank credit cards, promotional offers, usage tips, and benefit comparisons.)

* **Why it’s good:** Offers more specifics on what content will be found using this tag; benefits will often include promotional information as well.
* **Target Audience:** Helps users understand the specific types of information they can expect to find in tagged content.

**Option 3 (Emphasizing General Understanding):**

* **描述 (Description):** 了解在台灣使用的銀行信用卡，包括選擇、申請、使用、優惠等各方面的指引。 (Guidance on all aspects of bank-issued credit cards used in Taiwan, including selection, application, usage, and promotions.)

* **Why it’s good:** Focuses on the user’s task, to get guidelines and understanding.
* **Target Audience:** Ideal for beginners or those unfamiliar with credit cards, since it emphasizes guidance.

**Option 4 (Targeted by a specific focus, such as for a blog):**

* **描述 (Description):** 分享銀行信用卡的使用心得、最新優惠資訊、聰明消費策略，以及信用卡理財建議。 (Sharing experiences using bank credit cards, the latest promotional offers, smart spending strategies, and credit card financial advice.)

* **Why its good:** Targets the content if a blog or sharing user experience is intended.
* **Target Audience:** Best for blog or content creator targeting an experinced user base.

**Key Considerations when choosing the best description:**

* **Your content’s focus:** Does your blog or website concentrate on product reviews, tips, comparing cards, promotional offers, all of these, or something else? Match the description to your content.
* **Your target audience:** Who is your audience? New users or experienced users?

**How to implement it in WordPress (if you’re not already familiar):**

1. **Log in to your WordPress dashboard.**
2. **Go to “Posts” > “Tags” (or “Categories” if you’re using categories instead of tags).**
3. **Find the “銀行信用卡” tag in the list.** If it doesn’t exist yet, create one.
4. **Edit the tag.** You’ll typically see a field labeled “Description” (or possibly “Tag Description” depending on your WordPress version or theme).
5. **Paste the desired description* into the “Description” field.**
6. **Click “Update” (or “Add Tag” if creating).**

Choose the description option that best suits your site’s content and audience!