Here are a few options for a WordPress post tag description for “自我表達” (Self-Expression in Traditional Chinese), varying in their style and length:

**Option 1: Concise & Direct**

> 自我表達是展現內在想法、感受和獨特性的過程。探索各種方式，透過藝術、文字、音樂等自由自信地表達自我。

> (Self-expression is the process of showing inner thoughts, feelings, and uniqueness. Explore various ways, through art, writing, music, etc., to express yourself freely and confidently.)

**Option 2: Slightly More Explanatory**

> 探索自我表達的奧妙！這個標籤涵蓋了所有關於如何展現真實自我、創意發揮和分享個人觀點的內容。無論你用什麼方式，表達自己都是一個重要的旅程。

> (Explore the mysteries of self-expression! This tag covers everything about how to show your true self, unleash your creativity, and share your personal perspective. No matter how you do it, expressing yourself is an important journey.)

**Option 3: Focus on Benefits (More Motivational)**

> 想要更了解自己？想透過創作或分享展現你的獨特之處？這個標籤將引導你探索自我表達的力量，幫助你釋放內在潛能，建立自信，並與世界分享你的故事。

> (Want to understand yourself better? Want to show your uniqueness through creation or sharing? This tag will guide you to explore the power of self-expression, help you unleash your inner potential, build confidence, and share your story with the world.)

**Option 4: Simple & General**

> 與自我表達相關的文章、指南、建議等。

> (Articles, guides, suggestions, etc., related to self-expression.)

**Choosing the Best Option:**

* **Consider your target audience:** Who are you writing for? Do they need a more detailed explanation or just a brief overview?
* **Think about the content of your posts:** What kind of content will be tagged with “自我表達”? Will it be practical tips, inspirational stories, or theoretical discussions?
* **Keep it concise:** WordPress tag descriptions shouldn’t be too long. Aim for clear and easy to understand in a quick glance.

I would recommend Option 2 or 3 if you’re looking for something with a bit more depth and appeal. If you prefer a more minimalist approach, Option 1 or 4 are excellent choices. Make sure to use whichever one best suits the character and tone of your blog.