Here are a few options for a WordPress post_tag description for “openpoint優惠” in Traditional Chinese, varying in length and nuance:

**Option 1 (Concise and Direct):**

> 享受 Openpoint 點數帶來的各種獨家優惠和折扣！

* **Translation:** Enjoy exclusive deals and discounts with Openpoint rewards points!
* **Why it’s good:** Simple, clear, and immediately communicates the core benefit.

**Option 2 (More descriptive):**

> 探索所有與 Openpoint 相關的優惠活動，包括點數加倍、商品折扣、合作商家優惠等，讓你輕鬆累積點數、享受更豐富的生活！

* **Translation:** Explore all the promotional activities related to Openpoint, including double points, product discounts, partner merchant offers, and more, allowing you to easily accumulate points and enjoy a richer life!
* **Why it’s good:** Detailed and highlights various benefits.

**Option 3 (Focus on the user experience):**

> 想知道如何聰明地利用 Openpoint 點數，享受最划算的優惠嗎？在這裡，我們會分享最新的 Openpoint 優惠資訊、使用技巧，讓你成為精打細算的 Openpoint 達人！

* **Translation:** Want to know how to cleverly use Openpoint points to enjoy the most valuable deals? Here, we’ll share the latest Openpoint promotional information and usage tips, helping you become an Openpoint expert!
* **Why it’s good:** Targets users looking for advice and information.

**Option 4 (Short and Sweet):**

> 掌握 Openpoint 的最新優惠，不錯過任何省錢機會！

* **Translation:** Stay on top of the latest Openpoint offers, and don’t miss any opportunities to save money!
* **Why it’s good:** Very concise and emphasizes saving.

**How to choose the best description:**

* **Consider your target audience:** Who are you trying to reach? Younger users might prefer a more casual description, while a more formal tone might suit other audiences.
* **Reflect the content:** Does your content focus on informational tips, specific deals, or a general overview of Openpoint? The description should align.
* **Keep it concise:** WordPress post tag descriptions should generally be short and to the point. Too long and it might get cut off in previews.

I recommend choosing Option 2 or 3 if you can find room, as they’re the most informative, or Option 1 if you want a short, sweet description. Make sure to leave enough space for your other tags and post content.