Here are a few options for a WordPress post_tag description for the title “母子情誼” in Traditional Chinese, varying slightly in tone and focus:

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

> 描述關於母愛與親子關係的文章。 (Describes articles about maternal love and parent-child relationships.)

**Option 2 (Emphasizing Warmth and Bonds):**

> 溫馨動人的母子情誼，描寫母愛、親情和親子間的深厚情感。 (Heartwarming and touching mother-child bonds, describing maternal love, familial affection, and the deep emotions between parent and child.)

**Option 3 (Focusing on Challenges and Moments):**

> 關於母子關係的點滴，包括愛與關懷、挑戰與成長、以及珍貴的回憶。 (Details regarding the mother-child relationship, including love and care, challenges and growth, and precious memories.)

**Option 4 (More Literary and Poetic):**

> 道盡母子之愛的細膩篇章，探索親情中的美好、苦澀與永恆。 (Expressing the intricate chapters of mother-child love, exploring the beauty, bitterness, and eternity within familial love.)

**Choosing the Best Option:**

The best option depends on the content of your posts and the overall tone you want to establish for your website. If your content is mostly heartwarming and sentimental, Option 2 might be a good fit. If you cover a range of experiences within parent-child relationships (good and bad), Option 3 might be more appropriate. For a more general description, Option 1 is a solid choice. Option 4 is suitable if your writing style is more literary.

I would recommend considering the specific topics you will be tagging with “母子情誼” and choosing the description that best reflects those topics. You can always modify it later!