Here are a few options for a WordPress post_tag description for “買發票” (Buying Receipts) in Traditional Chinese, with varying levels of detail and focus:

**Option 1: Simple & Direct**

* **Description:** 購買發票相關的文章。 (Articles related to buying receipts.)
* **Focus:** Concise and clearly explains the tag’s purpose.

**Option 2: Slightly More Informative**

* **Description:** 關於買發票、發票買賣、以及相關法律或注意事項的內容。 (Content about buying receipts, receipt trading, and related legal or cautionary points.)
* **Focus:** Expands slightly, including related terms and topics that posts using the tag might cover.

**Option 3: Emphasis on Legal Considerations (Good for potential risk)**

* **Description:** 處理買發票或發票交易時，務必了解相關法律規定和風險。本標籤涵蓋與此議題相關的文章。 (When dealing with buying receipts or receipt transactions, be sure to understand the relevant laws and risks. This tag covers articles related to this topic.)
* **Focus:** Addresses the legal implications and potential risks of the subject, useful if the blog is covering legal aspects. This is important because buying a receipt often implies some form of illegal activity.

**Option 4: A bit more nuanced:**

* **Description:** 討論買發票、尋找發票、或其他與發票相關的資訊和建議。 (Discussing buying receipts, searching for receipts, or other information and advice related to receipts.)
* **Focus:** Broader scope, includes search for specific receipts.

**How to choose the best option:**

* **Your Target Audience:** Who are you writing for? Are they technically savvy, or are they primarily concerned with a specific aspect of information?
* **Content of your blog**: What aspects of buying receipts does your blog focus on? (Legal, how to, where to get, etc.)
* **Your Blog’s Tone:** Is your blog formal, casual, educational, or a mix?

To enter this description in WordPress:

1. Go to your WordPress admin panel.
2. Navigate to **Posts** > **Tags**.
3. Find the tag “買發票” (or create it).
4. Enter the appropriate description in the “Description” field.
5. Click “Update” or “Save”.