Here are a few options for a WordPress post tag description for “vegan” in Traditional Chinese, with varying levels of formality and emphasis:

**Option 1 (Simple & Clear):**

* **Title:** vegan (保持自然素食)
* **Description:** 一切不含有任何動物產品的食物和生活方式。 (Yīqiè bù háng yǒu rènhé dòngwù chǎnpǐn de shíwù hé shēnghuó fāngshì.) (Everything that does not contain any animal products, including food and lifestyle.)
* **Focus:** Direct, easy to understand.

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

* **Title:** vegan (全素)
* **Description:** 指完全不食用任何動物來源產品，包括肉類、魚類、蛋、奶製品和蜂蜜等。提倡以植物性食物為主的飲食。 (Zhǐ wánquán bù shǐyòng rènhé dòngwù láiyuán chǎnpǐn, bāokuò ròulèi, yúlèi, dàn, nǎizhìpǐn hé fēngmì děng. Tíchàng yǐ zhíwù xìng shíwù wéi zhǔ de yǐnshí.) (Referring to complete avoidance of any products from animals, including meat, fish, eggs, dairy, and honey, etc. Advocating for a diet primarily based on plant-based foods.)
* **Focus:** More explanatory, clarifies the scope.

**Option 3 (Emphasizing Benefits):**

* **Title:** vegan (純素生活)
* **Description:** 選擇不吃肉、不穿皮草、不用動物實驗產品，體驗健康、環保、關愛生命的純素生活方式。 (Xuǎnzé bù chī ròu, bù chuān pí cǎo, bù yòng dòngwù shíyàn chǎnpǐn, tǐyàn jiànkāng, huánbǎo, guān’ài shēngmìng de chún sù shēnghuó fāngshì.) (Choosing not to eat meat, wear fur, or use products tested on animals, to experience a healthy, environmentally friendly, and compassionate vegan lifestyle.)
* **Focus:** Highlights the positive aspects of veganism.

**Option 4 (Short & Direct):**

* **Title:** vegan (純素 / 全素)
* **Description:** 拒絕所有動物產品，擁抱植物性飲食。 (Jùjué suǒyǒu dòngwù chǎnpǐn, yōngbào zhíwù xìng yǐnshí.) (Rejecting all animal products, embracing a plant-based diet.)
* **Focus:** Quick and concise, suitable if space is limited.

**Key considerations when choosing which description to use:**

* **Target Audience:** Who are you writing for? Beginner vegans? Experienced vegans? People unfamiliar with the concept?
* **Blog’s Focus:** Does your blog focus on recipes, lifestyle, ethical considerations, or something else?
* **Length:** How much space do you have available? WordPress often limits the description length.
* **Keywords:** Make sure your descriptions include related terms that users might search for, such as “植物性飲食”, “素食” etc.