The next day, my mother got up early and went to the market.

Since she often bought mangos, as soon as she arrived, the vendor eagerly recommended the mango, saying they were big and fresh, "Guaranteed your daughter will love them."

My mother stared blankly and said, "My daughter is allergic to mango."

The vendor gave her a puzzled look but didn’t say anything, moving on to other customers. My mother wandered around the vegetable stalls, picking up a cucumber and then putting it down, picking up a potato and then putting it down.

Her behavior was so strange that one vendor gently reminded her, "If you tell me what...