Here are a few options for the WordPress post_tag description, keeping in mind brevity and search engine optimization:

**Option 1 (Concise & SEO-focused):**

> 終身學習 (Zhōngshēn Xuéxí): 持續學習是通往成功和個人成長的鑰匙。探索關於終身學習的資源、策略和益處。 提升自我，擁抱不斷學習的旅程。

* **Translation:** Lifelong Learning: Continuous learning is the key to success and personal growth. Explore resources, strategies, and benefits related to lifelong learning. Enhance yourself, and embrace the journey of continuous learning.
* **Why it’s good:** Uses the tag title, includes keywords (學習, 成功, 個人成長), and a clear call to action.

**Option 2 (Motivational & Broad):**

> 終身學習的真諦：不止於書本知識，更是個人、職業乃至生活的持續進化。 讓你啟發，探索終身學習的無限潛力。

* **Translation:** The Essence of Lifelong Learning: More than just knowledge from books, but the continuous evolution of the individual, of your career, and even life. Let it spark inspiration, and explore the limitless potential of lifelong learning.
* **Why it’s good:** Emphasizes the broad scope of lifelong learning and offers the benefit of inspiration.

**Option 3 (Practical & Resource-Oriented):**

> 終身學習：獲取關於學習資源、課程、以及自我提升工具的最新資訊。無論你是學生、專業人士還是退休人士，終身學習都是對你而言。

* **Translation:** Lifelong Learning: Get the latest information about learning resources, courses, and self-improvement tools. Whether you are a student, a professional, or a retiree, lifelong learning is for you!
* **Why it’s good:** Highlights specific aspects and is directed at a wider audience.

**Option 4 (Short & Sweet):**

> 終身學習：永不停歇的學習，豐富你的知識與視野，成就更加精彩的人生。

* **Translation:** Lifelong Learning: Never-ending learning, enriching your knowledge and vision, and achieving a more brilliant life.
* **Why It’s Good:** Very concise, direct, and motivating.

**Key Considerations When Choosing:**

* **Target Audience:** Who are you writing for? Are they students, professionals, or a general audience? Choose the description that best resonates with them.
* **Blog’s Focus:** What kind of content is typically posted in this tag? (e.g., resource lists, philosophical essays, interviews)
* **SEO:** Ensure the description includes relevant keywords to improve searchability.
* **Character Limit:** WordPress post_tag descriptions often have a limit. All these descriptions are within a reasonable length. Check your theme for the exact limit.
* **Consistency:** Ensure the description fits the general tone and style of your blog.

I encourage you to pick the option that best suits the tone, content, and goals of your WordPress blog! You can even modify them slightly to create a description that’s perfectly tailored to your needs. Remember to save the updated description within your WordPress admin dashboard for the tag.