Here are a few options for a description for the WordPress `post_tag` titled “郵寄” (Yóuji):

**Option 1: Simple and Clear**

* **Description:** 包含所有與郵寄相關的文章，例如寄信、包裹、信件等等。 (Includes all posts related to mailing, such as sending letters, packages, mail, etc.)

**Option 2: More Descriptive and Wider Scope**

* **Description:** 涵蓋所有關於郵寄、寄信、包裹運送和文件傳遞的主題，包括國際郵件、國內郵遞服務，以及郵政相關的規定，技巧和趨勢。 (Covers all topics related to mailing, sending letters, package delivery, and document transmission, including international mail, domestic postal services, and postal-related regulations, techniques, and trends.)

**Option 3: Focus on Practical Application**

* **Description:** 分享郵寄相關的實用技巧、建議和資訊，幫助您更有效地寄送信件，或是更了解郵遞流程。 (Shares practical tips, suggestions, and information related to mailing, helping you send mail more effectively or better understand the postal process.)

**Option 4: Concise and Keyword-Rich**

* **Description:** 關鍵字：郵寄, 郵件, 包裹, 信件, 郵遞, 寄信, 郵政服務 (Keywords: Mailing, Mail, Package, Letter, Postal, Sending Letters, Postal Service)

**Which one to choose depends on the purpose of the blog and the audience:**

* **If the blog is primarily about practical DIY knowledge:** Option 3
* **If the blog is more about general information:** Option 2
* **If you a are writing a blog that doesn’t need much explanation:** Option 1
* **If the post tags is used as an SEO strategy:** Option 4

**Important Notes:**

* You can also use a translator if needed for perfect wording accuracy.
* In the WordPress tag settings, you often have a field called “Description” specifically for this. That’s where you would paste the chosen description.
* Consider your target audience. Are they familiar with technical terms related to mail? If not, keep the description more accessible.
* Always write in traditional Chinese if your target audience is traditional Chinese speakers.