Here are a few options for the description of the WordPress post tag “線上匯款” (Xiànshàng huìkuǎn, meaning “Online Remittance” or “Online Transfer”) in Traditional Chinese, ranging from brief to more descriptive:

**Option 1: Concise & Direct**

> 線上匯款相關資訊，包含銀行轉帳、電子支付等線上轉帳方式。 (Xiànshàng huìkuǎn xiāngguān zīxùn, bāohán yínháng zhuǎnzàng, diànzǐ zhīfù děng xiànshàng zhuǎnzàng fāngshì.)
>
> *Translation:* Information related to online remittances, including online transfer methods such as bank transfers and electronic payments.

**Option 2: Slightly More Explanatory**

> 瞭解更多關於線上匯款，包括各種線上轉帳平台、安全提示、以及費用比較等。 (Liǎojiě gèng duō guānyú xiànshàng huìkuǎn, bāokuò gèzhǒng xiànshàng zhuǎnzàng píngtái, ānquán tíshì, yǐjí fèiyòng bǐjiào děng.)
>
> *Translation:* Learn more about online remittances, including various online transfer platforms, safety tips, and fee comparisons.

**Option 3: Focusing on Practical Applications**

> 探索線上匯款的便利性，包括國際匯款、國內轉帳、以及如何安全地進行線上交易。 (Tànsuǒ xiànshàng huìkuǎn de biànlìxìng, bāokuō guójì huìkuǎn, guónèi zhuǎnzàng, yǐjí rúhé ānquán de jìnxíng xiànshàng jiāoyì.)
>
> *Translation:* Explore the convenience of online remittances, including international remittances, domestic transfers, and how to securely conduct online transactions.

**Option 4: Emphasizing a Specific Audience (e.g., Beginners)**

> 為線上匯款新手提供指南，包含逐步操作教學、常見問題解答、以及避免詐騙的建議。 (Wèi xiànshàng huìkuǎn xīnshǒu tígōng zhǐnán, bāohán zhúbù cāozuò jiàoxué, chángjiàn wèntí jiědá, yǐjí bìmiǎn zhàpiàn de jiànyì.)
>
> *Translation:* Guidance for online remittance beginners, including step-by-step operation tutorials, frequently asked questions, and suggestions to avoid fraud.

**Which option to choose depends on:**

* **Your blog’s audience:** Who are you trying to reach?
* **The content of the related posts:** What kind of information are you generally sharing about online remittances?
* **Word count limitations (if any):** Some plugins or themes have limitations on tag description length.

I recommend using **Option 2 or 3** as they offer a good balance of information and relevance to the common content about online remittances. You can adjust them further based on the points above. Remember to **consider the space** available in your WordPress tag settings when writing the description.