Here are a few options for a WordPress post_tag description in Traditional Chinese for the title “街口支付”, ranging in length and focus:

**Option 1: Concise & Informative**

> 探索街口支付 (街口Pay) 的最新資訊、優惠活動、使用方法和相關報導。 輕鬆掌握台灣熱門行動支付的動態!

> *Translation:* Explore the latest information, promotional offers, usage methods, and related reports of 街口支付 (街口Pay). Easily stay up-to-date on the dynamics of Taiwan’s popular mobile payment!

**Option 2: Focused on Benefits**

> 街口支付 (街口Pay) – 讓您的生活更便捷、更優惠。 這裡分享街口支付的各種優勢、使用技巧及消費優惠，讓您聰明付款，享受精彩生活!

> *Translation:* 街口支付 (街口Pay) – Making your life more convenient and affordable. Here we share the various advantages of 街口支付, usage tips, and consumer discounts, enabling you to pay smartly and enjoy a wonderful life!

**Option 3: Broad & Search-Optimized**

> 關於街口支付 (街口Pay) 的全方位資訊，包括使用教學、商家優惠、合作店家、安全支付指南、最新活動等。 快速了解街口支付的各種功能和使用方法，方便您的日常消費。

> *Translation:* Comprehensive information about 街口支付 (街口Pay), including usage tutorials, merchant discounts, partner stores, secure payment guides, and the latest promotions. Quickly understand the various functions and usage methods of 街口支付, making your daily spending easier.

**Option 4: Short & Direct**

> 關於街口支付 (街口Pay) 的最新消息與資訊。

> *Translation:* The latest news and information about 街口支付 (街口Pay).

**Key Considerations when choosing:**

* **SEO:** Consider what keywords people might search for related to 街口支付. The longer descriptions include more keywords.
* **Target Audience:** Who are you writing for? The tone and level of detail should match your audience’s knowledge.
* **Length Limits:** WordPress might have character limits for tag descriptions.
* **Your Content’s Focus:** What kind of posts do you write about 街口支付? Choose a description that accurately reflects your blog’s content.

I recommend choosing **Option 3** or **Option 2** for broader appeal and search engine optimization if you plan to write extensively about 街口支付. Option 1 is also a good choice if you want a quick, informative summary. Option 4 is great if you prefer simplicity.