Here are a few options for a WordPress post tag description, translated to Traditional Chinese, depending on the context you want to emphasize:

**Option 1: Short & Sweet (Best for general use)**

* **Title:** 首刷禮
* **Description:** 新用戶首次購物或註冊可獲得的禮品。 (New user gifts received upon first purchase or registration.)

**Option 2: Focusing on Promotion**

* **Title:** 首刷禮
* **Description:** 首次消費享有特別優惠，千萬不要錯過！ (Special offers available on first purchase, don’t miss out!)

**Option 3: Indicating a broader range**

* **Title:** 首刷禮
* **Description:** 除了「首刷」的優惠外，包含其他首次加入會員、註冊活動等等的贈品與禮物。 (Besides first purchase offers, includes gifts and presents for first-time membership signup, registration and other activities.)

**Option 4: More Detailed (if you want to clarify what’s covered)**

* **Title:** 首刷禮
* **Description:** 首次購物、註冊或其他指定活動時，商家提供的獨家優惠或贈品，例如折扣碼、贈品、試用裝等。 (Exclusive offers or gifts provided by merchants during first purchase, registration, or other designated activities, such as discount codes, free gifts, or trial sizes.)

**Key Considerations when choosing a description:**

* **Target Audience:** Who are you trying to reach?
* **Specificity:** How detailed should the description be?
* **SEO:** Consider incorporating relevant keywords for discoverability

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

1. **Go to Posts > Tags** (in your admin dashboard)
2. **Select the “首刷禮” tag:** If it already exists, click “Edit”. If not, create a new one.
3. **Enter the description:** Paste the appropriate description into the “Description” field (usually found below the tag title and slug). Then click “Update” (or “Add New Tag”) .