Who mistook ink for vinegar?

This is Wang Xizhi.

When Wang Xizhi was young, he often listened to his teacher Mrs. Wei telling stories about the diligent study and hard practice of calligraphers in the past dynasties. When he was practicing calligraphy, he was thinking so hard that he forgot to eat and sleep.

Wang Xizhi was practicing calligraphy with great interest, but he forgot to eat again. His wife Xi Jun asked the servant to bring him a plate of freshly steamed buns and a bowl of vinegar and garlic. The family boy urged him several times to eat it while it was hot. When Wang Xizhi was eating the steamed buns, he was still thinking about the meaning of the words. While thinking about it, he actually thought that the ink was vinegar and garlic, and he ate it.