Here are a few options for a WordPress post_tag description for “線上申報” (Online Declaration/Filing) in Traditional Chinese, with varying lengths and focuses:

**Option 1: Concise and General**

* **Description:** 透過網路輕鬆完成申報，省時又便利。 (Easily complete your declaration online, saving time and convenience.)

**Option 2: Focus on Benefits**

* **Description:** 享受線上申報的優勢，無需排隊、隨時隨地提交您的申請，更快速、更有效率。 (Enjoy the advantages of online declaration: no need to queue, submit your application anytime, anywhere, faster and more efficient.)

**Option 3: Focus on Content Covered**

* **Description:** 涵蓋各種線上申報相關資訊，包括教學、流程、常見問題解答及最新消息。 (Covering various online declaration-related information, including tutorials, processes, FAQs, and the latest news.)

**Option 4: More Specific (If applicable to a particular type of form)**

* **Description:** 各項稅務、勞工、或其他相關文件線上申報教學與資訊，讓您輕鬆掌握申報流程。 (Online declaration tutorials and information for various taxes, labor, or other relevant documents, allowing you to easily grasp the filing process.)

**Option 5: A Little More Engaging**

* **Description:** 告別繁瑣的紙本申報，迎接更便捷的線上申報時代！ 快速掌握申報流程，輕鬆完成您的申請。 (Say goodbye to cumbersome paper-based declarations and welcome the era of more convenient online filing! Quickly grasp the filing process and easily complete your application.)

**How to Choose:**

* **Consider the context:** What kind of content will be tagged with “線上申報”? (e.g., tax filings, government services?)
* **Length:** WordPress tag descriptions have some limit (though it varies per theme), so keep it relatively short.
* **Keywords:** Try to incorporate relevant keywords to help with searchability. (e.g., “申報流程”, “線上教學”, “常見問題” etc.)

I recommend choosing the option that best suits the type of content you’re associating with this tag. Remember to put this description in the WordPress tag settings. You’ll usually find the option within your “Tags” section of posts.