Here are a few options for a description for the WordPress post tag “猜年齡” (Guess Their Age) in Traditional Chinese, ranging from concise to slightly more descriptive:

**Option 1 (Concise):**

> 測試你的觀察力！猜猜文章中人物的年齡。

* **(Translation):** Test your observation skills! Guess the age of the characters in the articles.
* **(Focus):** Straight to the point, emphasizes the challenge.

**Option 2 (Slightly More Descriptive):**

> 玩「猜年齡」遊戲！看看你能否準確估計文章中人物或事件發生的年齡。

* **(Translation):** Play the “Guess Their Age” game! See if you can accurately estimate the age of characters or events in the articles.
* **(Focus):** More engaging, highlights the game aspect.

**Option 3 (With a Bit More Context):**

> 挑戰你的年齡判斷力！這裡的文章包含需要你「猜年齡」的內容，挑戰你的觀察和推理能力。

* **(Translation):** Challenge your age judgment! The articles here contain content that requires you to “guess the age,” challenging your observation and reasoning skills.
* **(Focus):** Provides clear context about the type of content associated with the tag.

**Option 4 (Focusing on Variety – If the blog has diverse content):**

> 猜猜看！無論是歷史人物、虛構角色，還是年邁的老兵，透過這標籤，讓你盡情挑戰猜測年齡的樂趣。

* **(Translation):** Guess away! Whether it’s historical figures, fictional characters, or seasoned veterans, this tag lets you enjoy the fun of guessing ages.
* **(Focus):** Highlights the variety of content the tag covers, and emphasizes the fun.

**Choosing the best option:**

Consider the overall tone and focus of your blog when making your choice.

* If your blog is generally simple and to-the-point, Option 1 or 2 might be best.
* If you want to explicitly describe the style of your posts, Option 3 works well.
* If your content spans various topics, Option 4 is better.

Remember to make your description specific and alluring enough for your audience. Good luck!