rarely mainland Chinese knew this meaning:

來源: xiaoxiao雨 於 2022-06-29 09:41:05 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (116 bytes)
回答: 張伯苓晚年 由 chufang 於 2022-06-28 08:29:35

it is forgotten by the majority. The majority do not care about this and they only care about their food.

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