Here are a few options for a WordPress post tag description in Traditional Chinese, depending on the nuance you want to convey:

**Option 1 (Most General & Clear):**

> 提供與法律相關資訊和協助。涵蓋法律諮詢、法律文件、法律程序等方面，協助個人及團體解決法律問題。 (Provides information and assistance related to law. Covers legal consultation, legal documents, legal procedures, and assists individuals and groups in solving legal problems.)

**Option 2 (Focus on Accessibility):**

> 關於法律援助的資源，旨在協助有需要的人士獲得法律協助，包含諮詢、法律服務、以及其他相關資訊。 (Resources on legal aid, aimed at helping those in need receive legal assistance, including consultation, legal services, and other related information.)

**Option 3 (Slightly More Formal):**

> 涵蓋法律援助，旨在為有經濟困難或弱勢群體提供法律支援。包括法律諮詢、訴訟代理、以及其他法律資源，協助理解及應對法律問題。 (Encompasses legal aid, aimed at providing legal support to those facing financial difficulties or disadvantaged groups. Includes legal consultation, litigation representation, and other legal resources, assisting in understanding and addressing legal issues.)

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

> 法律補助相關資訊與服務。 (Information and services related to legal aid.)

**Key Considerations When Choosing:**

* **Target Audience:** Who are you trying to reach? The general public? Specific disadvantaged groups?
* **Content Focus:** Does the blog mainly offer information? Services? Both?
* **Tone:** Formal or informal?
* **Character Count:** WordPress allows for a certain character limit for meta descriptions. Consider that when choosing the length.

I recommend choosing the description that best suits your specific blog’s purpose and target audience. Remember to use proper punctuation. Good luck!