Here are a few options for the description of the WordPress post tag “減半” in Traditional Chinese, catering to different needs:

**Option 1: Concise & Direct (Best for clarity within a taxonomy)**

> 減半：指數量、價格或其他數值減少一半。

**(Translation: Halving: Refers to a reduction of a quantity, price, or other value by half.)**

* **Why it’s good:** Clear, concise, and directly explains the meaning of the tag without being overly complex. Ideal for use in tag clouds or other displays where brevity is important.

**Option 2: Slightly More Explanatory (Good for broader understanding)**

> 減半：表示將某事物原有的數量、價格、或其他數值減少到其一半的狀態。在經濟、加密貨幣、或其他領域中常有應用。

**(Translation: Halving: Indicates reducing the original quantity, price, or other numerical value of something to half its original state. Often applied in economy, cryptocurrencies, and other fields.)**

* **Why it’s good:** Provides slightly more context, mentioning potential applications. Suitable when you want to give readers a bit more understanding.

**Option 3: Focused on Cryptocurrencies (If most posts are related to crypto)**

> 減半：在加密貨幣領域中尤指區塊獎勵減少一半的事件。例如，比特幣的減半事件會影響新幣的發行量和價值。

**(Translation: Halving: In the field of cryptocurrencies, this specifically refers to the event of reducing the block reward by half. For example, Bitcoin’s halving event affects the issuance of new coins and their value.)**

* **Why it’s good:** Very specific to crypto. Use this if most posts associated with the tag deal with Bitcoin or other similar coins and their halving events.

**Option 4: Simple & General (For a basic understanding)**

> 減半：表示將某事物減少一半。

**(Translation: Halving: Indicates reducing something to half.)**

* **Why it’s good:** Extremely easy to understand. Good for general use when the content is not too narrow.

**Choosing the best option depends on your specific WordPress content and the target audience.** Think about:

* **The scope of your posts:** Primarily economic/finance, or focusing on a narrow topic like cryptocurrency?
* **Your audience’s level of understanding:** Are they already familiar with the concept of halving, or will they need more context?
* **The overall design of your category/tag page:** How much should you say and where will the description be placed?

I recommend starting with **Option 1 or 4 for clarity** and then adjusting based on the context of your specific posts and target audience. You can then place them in the “Description” field within your WordPress tag settings.