Here are a few options for a WordPress post_tag description for “變黑” (Biàn Hēi) in Traditional Chinese, ranging in formality and context:

**Option 1 (Concise & General):**

* **Description:** 指事物變成黑色，或狀態惡化。 (Zhǐ shìwù biànchéng hēisè, huò zhuàngtài èhuà.) – Referring to something turning black, or its condition worsening.
* **Keywords:** 黑色, 黑化, 狀態, 惡化 (Hēisè, hēihuà, zhuàngtài, èhuà) – Black color, turning black, state, worsening

**Option 2 (More Descriptive, for topics involving moral decline or negativity):**

* **Description:** 描述物體或情勢轉為負面、消極或不好的狀態，也可指人或事物失去原有的純潔或美好。 (Miáoshù wùtǐ huò qíngshì zhuǎn wèi fùmiàn, xiāojí huò bù hǎo de zhuàngtài, yě kě zhǐ rén huò shìwù shīqù yuányǒu de chúnjié huò měihǎo.) – Describing an object or situation becoming negative, passive, or bad. It can also refer to a person or thing losing its original purity or beauty.
* **Keywords:** 負面, 變壞, 消極, 衰退, 墮落 (Fùmiàn, biànhuài, xiāojí, shuāituì, duòluò) – Negative, decaying, passive, decline, debasement

**Option 3 (Focusing on literal blackening and concrete examples):**

* **Description:** 指物體外觀顏色變黑，例如食物燒焦、金屬氧化、皮膚曬黑等。 (Zhǐ wùtǐ wàiguān yánsè biàn hēi, lìrú shíwù shāojiāo, jīnshǔ yǎnghuà, pífū shài hēi děng.) – Referring to the external color of an object turning black, such as burned food, oxidized metal, or tanned skin.
* **Keywords:** 黑, 顏色, 焦, 氧化, 曬黑 (Hēi, yánsè, jiāo, yǎnghuà, shài hēi) – Black, color, burnt, oxidation, tanned

**Option 4 (If used for humor or fictional contexts, e.g. games or fantasy):**

* **Description:** 在虛構世界中，常被用來描述力量的增強、邪惡的滋生，或黑暗力量的影響。 (Zài xūgòu shìjiè zhōng, cháng bèi yòng lái miáoshù lìliàng de zēngqiáng, xié’è de zīshēng, huò hēi’àn lìliàng de yǐngxiǎng.) – In fictional worlds, often used to describe the strengthening of power, the growth of evil, or the influence of dark forces.
* **Keywords:** 力量, 邪惡, 黑暗, 黑暗面, 轉變 (Lìliàng, xié’è, hēi’àn, hēi’ànmiàn, zhuǎnbiàn) – Power, evil, darkness, dark side, transformation

**Key Considerations When Choosing:**

* **Context of your posts:** What topics are you tagging with “變黑”? This will determine which description best fits the content you’re writing about.
* **Target audience:** Is your audience familiar with advanced Chinese vocabulary, or should the description be simpler?
* **SEO:** Include relevant keywords to help search engines understand what your posts are about.

**How to Use the Description in WordPress:**

1. **Go to the “Tags” section in your WordPress admin panel.** (Typically under “Posts” or “Blog.”)
2. **Click the tag “變黑” to edit it.**
3. **Look for the “Description” field.**
4. **Paste your chosen description into the field.**
5. **(Important) Add your relevant keywords to the description or keywords box on your tag edit page to help search engines index your tags correctly.**
6. **Update the tag.**

Choose the description that best suits the overall theme and tone of your blog! Good luck!