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

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

* **Description:** 尋找免費信用卡資訊？了解各種免年費信用卡優惠，比較不同發卡機構的福利，助您聰明消費，省錢又省力！
* **Explanation:** This option is short, to the point, and includes relevant keywords like “免費信用卡” (free credit cards), “免年費” (no annual fee), and “優惠” (offers). It also emphasizes the benefit of comparison and smart spending.

**Option 2 (Benefit-Oriented):**

* **Description:** 想擁有免費信用卡？探索多種無需年費的選擇，享受現金回饋、積分獎勵、旅遊優惠等福利，讓您的消費更划算！
* **Explanation:** This description focuses on the benefits of having a free credit card. It uses words like “享受” (enjoy), “現金回饋” (cashback), “積分獎勵” (points rewards), and “旅遊優惠” (travel benefits) to attract users.

**Option 3 (Emphasis on Variety and Choice):**

* **Description:** 探索不同種類的免費信用卡，從現金回饋、積分卡到旅遊卡，應有盡有。比較不同發卡機構的優惠、利率和要求，找出最適合您的選擇。
* **Explanation:** This option highlights the variety of free credit cards available. It uses “不同種類” (different types), and encourages comparison to find the best fit for the user.

**Option 4 (SEO focused):**

* **Description:** 查詢免費信用卡，領取特別優惠！我們提供最新的免年費信用卡比較資訊，助您輕鬆選擇最適合的信用卡，省錢、賺取回饋、享受福利，發掘更多信用卡優惠。
* **Explanation:** Incorporates keywords strategically, targeting the search phrases users might be looking for.

**Tips for choosing the best description:**

* **Keywords:** Make sure the keywords “免費信用卡” is included in it, and other important related keywords.
* **Clarity:** Keep it clear and easy to understand.
* **Conciseness:** Within the WordPress limit for description length.
* **Relevance:** Make sure the description accurately reflects the content tagged with “免費信用卡”.
* **Target Audience:** Consider who you are writing for. This might influence your word choice and focus.

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

1. **Go to your Dashboard:** Find the “Posts” section.
2. **Go to the Tags Section:** Under “Posts”, there’s an option for “Tags”. Click on it.
3. **Find and edit the tag:** In the Table, search for “免費信用卡” tag. Click in the tag’s row and select “Edit” or use the Quick Edit function.
4. **Enter the description:** In the “Description” field, paste your chosen text.
5. **Update:** Click the “Update Tag” button.

Choose the description that best suits your content and desired effect. Good luck!