Here are a few descriptions for the WordPress post tag “時程” (Shíchéng) in Traditional Chinese, catering to different needs and styles:

**Option 1: Basic & Concise (Good for simple tagging)**

> 標示文章中關於時間安排、進度安排、及任務規劃的關鍵字。
>
> *English Translation: Keywords related to timelines, scheduling, and task planning within the articles.*

**Option 2: More Descriptive (Good for guiding user understanding)**

> 這個標籤涵蓋了所有關於時程安排、時間表或是計畫流程的文章內容。 無論您正在尋找產品開發時程、專案時程、會議時程，或是只是想暸解某個事件的時間安排，都可以在這裡找到相關資訊。
>
> *English Translation: This tag covers all the content within articles relating to timetables, schedules or planning processes. Whether you are looking for product development timelines, project schedules, meeting schedules, or simply want to understand the timing of an event, you can find related information here.*

**Option 3: Action-Oriented (May encourage user interaction)**

> 探索所有關於「時程」的資訊。 想知道最新的專案時程？ 或是正在規劃你的旅遊計畫？ 點擊這裡，一起看看如何有效地安排時間，達成目標！
>
> *English Translation: Explore all information about “Timelines.” Want to know the latest project schedules? Or are you planning your travel itinerary? Click here and see how to effectively manage time and achieve your goals!*

**Option 4: Focus on Specificity (If your blog has specific focus)**

> 聚焦於時程安排相關的文章，包含產品開發、專案管理、活動流程規劃等主題。 如果你對特定專案的時程、截止日期與關鍵里程碑有興趣，這個標籤將會是你的好幫手。
>
> *English Translation: Focused on articles related to timetable arrangement, including topics on product development, project management, and event flow planning. If you are interested in the schedules, deadlines, and key milestones of a specific project, this tag will be a great helper.*

**Which Option to Choose?**

* **For simplicity:** Option 1.
* **For a clearer explanation:** Option 2.
* **For encouraging engagement:** Option 3.
* **If focus on a particular subject from Schedule planning:** Option 4.

I recommend choosing the option that best aligns with the type of content you are writing about and your target audience. When you enter this description in WordPress, make sure it’s helpful and relevant to your readers. Good luck!