Here are a few options for a WordPress post tag description for “期限” (qí xiàn – Deadline/Time Limit) in Traditional Chinese, catering to different needs:

**Option 1: Concise and General**

* **Description:** 指活動、文件等需要完成的截止日期或有效時限。 (zhǐ huódòng, wénjiàn děng xūyào wánchéng de jiézhǐ rìqī huò yǒuxiào shíxiàn.) – Refers to the deadline or validity period for activities, documents, etc.

**Option 2: More Specific (for projects/tasks)**

* **Description:** 規劃任務或專案時所設定的截止日期。 了解每個時程的執行時間與重要時限。 (guīhuà rènwù huò zhuānyè shídìng de jiézhǐ rìqī. liǎojiě měi gè shíchéng de zhíxíng shíjiān yǔ zhòngyào shíxiàn.) – The deadline set when planning tasks or projects. Understand the execution time and key deadlines for each schedule.

**Option 3: Emphasis on Importance**

* **Description:** 重要時限！提醒您注意重要日期，包括截止日期、有效日期、或活動的開始與結束時間。 請勿錯過任何期限！ (zhòngyào shíxiàn! tíxǐng nín zhùyì zhòngyào rìqī, bāokuò jiézhǐ rìqī, yǒuxiào rìqī, huò huódòng de kāishǐ yǔ jiéshù shíjiān. qǐng wù cuòguò rènhé qīxiàn!) – Important deadlines! Reminds you to pay attention to important dates, including deadlines, validity, or the start and end times of activities. Don’t miss any deadlines!

**Option 4: Practical & Keyword Rich**

* **Description:** 與截止日期、完成期限、有效日期、交件截止日相關的內容。 幫助整理、追蹤與管理各種任務、專案或事件的時間節點。 (Yǔ jiézhǐ rìqī, wánchéng qīxiàn, yǒuxiào rìqī, jiāojiàn jiézhǐ rì xiāngguān de nèiróng. bāngzhù zhěnglǐ, zhuīzōng yǔ guǎnlǐ gèzhǒng rènwù, zhuānyè huò shìjiàn de shíjiān jiédiǎn.) – Content related to deadlines, completion deadlines, expiry dates, and submission deadlines. Helps organize, track, and manage time nodes for various tasks, projects, or events.

**Recommendation:**

I recommend **Option 4** if you want to be relatively comprehensive and SEO friendly. It’s a good balance of descriptive and keyword-focused. Choose the option that best suits the content and purpose of your WordPress site.