Here are a few options for the WordPress post_tag description, catering to different levels of detail and focus:

**Option 1 (Concise & Informative):**

> 學習腳底按摩的基礎知識，掌握專業技巧，舒緩疲勞，促進健康。涵蓋穴位定位、按摩手法、注意事項等。

**(Translation: Learn the basics of foot massage, master professional techniques, relieve fatigue, and promote health. Covers acupoint location, massage techniques, precautions, etc.)**

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

> 腳底按摩技巧深入解析，從常見問題到進階手法，應有盡有。提供實用建議，助你在家也能輕鬆享受腳底按摩的好處。內容包括穴位圖解、不同疾病的對應按摩、以及DIY按摩指南。

**(Translation: In-depth analysis of foot massage techniques, covering everything from common questions to advanced techniques. Provides practical advice to help you easily enjoy the benefits of foot massage at home. Includes acupoint diagrams, corresponding massages for different ailments, and DIY massage guides.)**

**Option 3 (Focus on benefits):**

> 減輕腳部痠痛，改善睡眠品質，增強免疫力，腳底按摩是不容錯過的養生療法。在這個標籤下，你會找到各種關於腳底按摩技巧的文章，幫助你全面了解其功效與益處。

**(Translation: Relieve foot soreness, improve sleep quality, and enhance immunity. Foot massage is an indispensable health therapy. Under this tag, you will find various articles on the techniques of foot massage, helping you comprehensively understand its efficacy and benefits.)**

**Option 4 (Simple and direct):**

> 腳底按摩技巧相關文章，包括穴位知識、按摩手法、按摩工具介紹等。

**(Translation: Articles related to foot massage techniques, including acupoint knowledge, massage techniques, and massage tool introductions.)**

**Key considerations when choosing:**

* **Purpose of the tag:** Are you trying to attract new readers, or are you just providing categorization?
* **Target Audience:** Who are you writing for? Is your audience familiar with the topic?
* **Length:** Keep the description concise and easy to understand.
* **Keywords:** Include relevant keywords for SEO purposes (e.g., 腳底按摩, 穴位, 按摩手法)
* **Call to action (optional):** You could subtly encourage action, such as “開始探索腳底按摩的奧妙吧！” (Start exploring the mysteries of foot massage!) in a longer description.

Choose the description that best suits your needs and the content of your posts. Remember to consider what you want readers to know about this tag upon seeing it. Good luck!