Here are a few options for a WordPress post tag description, catering to different levels of formality and emphasis:

**Option 1: Concise & Clear**

* **Description:** 國中畢業，代表完成九年國民義務教育，進入人生新階段。 (Guózhōng bìyè, dàibiǎo wánchéng jiǔ nián guómín yìwù jiàoyù, jìnrù rénshēng xīn jiēduàn.) – Graduation from Junior High, signifying the completion of nine years of compulsory education and the start of a new phase in life.

**Option 2: More Detailed & Encouraging**

* **Description:** 標記有關國中畢業的貼文。恭喜從國中畢業，這是一個巨大的里程碑。無論是迎接高中生活的挑戰，還是選擇其他道路，都祝願您前程似錦！ (Biāojì yǒuguān guózhōng bìyè de tiēwén. Gōngxǐ cóng guózhōng bìyè, zhè shì yī gè jùdà de lǐchéngbēi. Wúlùn shì yíngjiē gāozhōng shēnghuó de tiǎozhàn, háishì xuǎnzé qítā dàolù, dōu zhùyuàn nín qiánchéng sì jǐn!) – Tag for posts related to Junior High graduation. Congratulations on graduating from Junior High! This is a huge milestone. Whether you’re embracing the challenges of high school life or choosing other paths, we wish you a bright future!

**Option 3: Focusing on Content**

* **Description:** 含有國中畢業相關資訊的文章、照片、回憶分享等等。 (Hányǒu guózhōng bìyè xiāngguān zīxùn de wénzhāng, zhàopiàn, huíyì fēnxiǎng děngděng.) – Articles, photos, memory sharing, etc., containing information related to Junior High graduation.

**Option 4: Simple & Direct**

* **Description:** 國中畢業相關內容。 (Guózhōng bìyè xiāngguān nèiróng.) – Content related to Junior High graduation.

**How to Choose:**

* **Your blog’s tone:** Is it formal or informal?
* **Your target audience:** Who are you writing for?
* **The kind of content you’re tagging:** What type of posts will this tag be applied to?

Remember to use the description that best reflects the content and purpose of your website! Choose the option that best suits your needs. Good luck!