Here are a few options for the description of the WordPress post tag “加油” in Traditional Chinese, ranging in detail and emphasis:

**Option 1: Concise & Direct**

* **Description:** 鼓勵、支持；加油打氣 (Encouragement, support; to cheer someone on).

**Option 2: Slightly Expanded & Explanatory**

* **Description:** 表達鼓勵和支持的常用詞語，用於激勵他人，或表達對事情順利成功的期望。 也可用於加油站等地方的指示。（A commonly used term expressing encouragement and support, used to motivate others or to express hope for success. Also used for directions at gas stations, etc.)

**Option 3: Focus on Sentiment**

* **Description:** 充滿正能量的祝福語，為他人帶來鼓勵和力量，表達友誼、支持和對成功的期許。（A blessing full of positive energy, bringing encouragement and strength to others, expressing friendship, support, and hope for success.)

**Option 4: More Detailed & Contextual**

* **Description:** 「加油」是中文中一個多功能的詞語，既可以是一種加油打氣，鼓勵某人繼續努力，也可以表示對目標的期許和祝福。 它經常被用在運動競賽、學習、工作等需要支持和鼓勵的場合。 ( “加油” is a versatile word in Chinese, which can be used to cheer someone on and encourage them to keep working hard, or to express expectations and blessings for a goal. It is often used in sports competitions, studies, work, and other situations that require support and encouragement.)

**Choosing the Right Option:**

* **Target Audience:** Who are you writing for? Chinese readers with varying levels of language skill? Consider the level of detail needed.
* **Post Content:** What is the content of the posts using this tag? Tailor the tag description to align with the scope of those posts.
* **SEO:** While descriptions don’t typically influence SEO as much as titles, consider keywords like “encouragement” (鼓勵), “support” (支持) or “motivation” (激勵) for better readability.

**How to Add the Description in WordPress:**

1. **Go to Posts > Tags.**
2. **Select the “加油” tag for editing.**
3. **In the “Description” field, paste your preferred description from above.**
4. **Click “Update.”**

I recommend Option 4 if you want to be sure the reader understands the meaning and its importance in Chinese culture and is most helpful to non natives, you can choose other choices based on other factors.