Here are a few options for a WordPress post_tag description for “等級制度” (Děngjí Zhìdù – Grade System) in Traditional Chinese, ranging in level of detail:

**Option 1: Concise & General**

> 分類與文章，標示出本站文章中與等級制度相關的內容。 (Fēnlèi yǔ wénzhāng, biāozhì chū běnzhàn wénzhāng zhōng yǔ děngjí zhìdù xiāngguān de nèiróng.)
>
> *Translation: Categorizes posts related to grade systems on this site.*

**Option 2: Slightly More Descriptive**

> 涵蓋與各種等級、階層、考核、評價等相關的文章。 (Hángài yǔ gèzhǒng děngjí, jiēcéng, kǎohé, píngjià děng xiāngguān de wénzhāng.)
>
> *Translation: Includes posts related to various grades, ranks, assessments, and evaluations.*

**Option 3: Emphasizing Different System Applications**

> 標示與不同領域中的等級制度相關的文章，例如公司升遷、學術評級、遊戲角色等級等。 (Biāozhì yǔ bùtóng lǐngyù zhōng de děngjí zhìdù xiāngguān de wénzhāng, lìrú gōngsī shēngqiān, xuéshù píngjí, yóuxì juésè děngjí děng.)
>
> *Translation: Indicates posts related to grade systems in different areas, such as corporate promotions, academic rankings, and game character levels, etc.*

**Option 4: Focusing on Analysis & Discussion**

> 收集關於等級制度的分析、討論、應用案例的文章，幫助讀者深入理解其背後邏輯與影響。 (Shōují guānyú děngjí zhìdù de fēnxī, tǎolùn, yìngyòng ànlì de wénzhāng, bāngzhù dúzhě shēnrù lǐjiě qí bèihòu luójí yǔ yǐngxiǎng.)
>
> *Translation: Collects articles on the analysis, discussion, and application cases of grade systems, to help readers understand the underlying logic and impact.*

**Which option is best depends on your website’s focus. Consider:**

* **Your Target Audience:** Are they general readers or more specialized?
* **The Content of Your Posts:** What topics will you be tagging with “等級制度”?
* **Your Goal:** Do you want to provide a general overview or delve into specific aspects of grade systems?

Choose the description that best reflects the purpose and content of your posts and helps your users understand what to expect when they click this tag. Remember to keep it relatively concise and easy to understand. Good luck!