Here are a few options for a WordPress post_tag description for “網路購買” (Traditional Chinese), ranging from simple to more descriptive:

**Option 1: Simple and Direct**

* **Description:** 在線上商店購買商品。 (Buy goods in online shops.)

**Option 2: Slightly More Descriptive**

* **Description:** 透過網路、網站、或應用程式購買產品和服務。 (Purchase products and services through the internet, websites, or applications.)

**Option 3: Including Keywords for SEO**

* **Description:** 探索網路購物世界！我們精選網路購買的最新趨勢、優惠資訊，包含線上購物技巧、安全建議。 (Explore the world of online shopping! We select the latest trends and deals for online purchases, including online shopping tips and security advice.)

**Option 4: Focused on the User’s Experience**

* **Description:** 輕鬆、方便地在線上購物。分享您的網路購買經驗，找到最佳折扣和優惠。 (Shop online easily and conveniently. Share your online shopping experiences and find the best discounts and deals.)

**Which one to choose?**

* If you are short on space or want a quick explanation, **Option 1 or 2** are good.
* If you want to optimize for search and explain the topic to users, **Option 3** is a great choice.
* If you wish to engage users to share their experiences, **Option 4** might be useful. Consider creating a call to action.

Remember to choose the description that best fits the overall tone and purpose of your blog.