Here are a few options for the WordPress post_tag description, catering to different levels of detail and user needs:

**Option 1: Concise & Informative**

* **Description:** 掌握 Line 的各種使用技巧，包括訊息傳送、視訊通話、群組管理等等。輕鬆上手，玩轉 Line！ (Master all kinds of Line usage skills, including message sending, video calls, group management, etc. Get started easily and play with Line!)

**Option 2: Slightly More Detailed**

* **Description:** 深入了解 Line 的使用方法。從基本操作到進階功能，教您如何傳送訊息、進行語音及視訊通話、建立群組聊天、分享檔案、使用貼圖及主題，以及其他實用的技巧，讓您更有效率地使用 Line。(Learn more about how to use Line. From basic operations to advanced features, we teach you how to send messages, make voice and video calls, create group chats, share files, use stickers and themes, and other useful tips, making your use of Line more efficient.)

**Option 3: Focusing on Search & Keywords**

* **Description:** Line 使用教學，包含 Line 訊息、視訊通話、群組聊天、貼圖、主題、隱私設定、免費通話、Line Pay 教學等。搜尋 Line app 使用技巧，都在這裡！(Line usage tutorial, including Line messages, video calls, group chats, stickers, themes, privacy settings, free calls, Line Pay tutorial, etc. Search for Line app usage skills, it’s all here!)

**Option 4: Addressing Beginners**

* **Description:** 正在尋找 Line 使用教學？別擔心！本站提供 Line 新手入門指南，教您如何下載、註冊、開始使用，以及各種常見功能的使用方法。從零開始，也能輕鬆學會使用 Line！(Looking for a Line usage tutorial? Don’t worry! This site provides a Line beginner’s guide, teaching you how to download, register, get started and use various common functions. Starting from scratch, you can easily learn to use Line!)

**How to Choose the Best Description:**

Consider the type of content you’ll be writing for this tag. If you’re covering a wide range of topics, then Option 2 or 3 is a good choice. If your content is more focused on beginners, then Option 4 is ideal. Choose the option that best reflects the content strategy of your site and offers a clear overview of what users can expect to find when clicking on this tag.

**Important Considerations within WordPress:**

* **Where to Add the Description:** Within WordPress, you typically add the tag description in the “Tags” section under “Posts” (or in the specific post tag’s edit screen).
* **Keyword Optimization:** While providing a clear description is important, consider including relevant keywords that users might search for (e.g., messages, calls, groups, stickers, etc.), as demonstrated in option 3.
* **Character Limit:** While WordPress doesn’t impose a strict character limit for these descriptions, it’s best to keep them concise and to the point. They will typically appear on the tag archive pages, so a shorter description is more user-friendly.