It is mainly said that in the Han Dynasty, a couple opened a tofu shop in a street, mainly selling tofu, and the proprietress of this shop was very beautiful, so people also called her tofu beauty, which is also a popular saying now. Of course, it is precisely because the proprietress looks better that she attracts many guests, which is also the name of eating tofu to flirt with the proprietress.
Of course, it may be that eating tofu was indeed a popular saying at that time, because it was precisely because of the coquettish and enchanting attitude of the proprietress that many customers were attracted, relying on the idea that others wanted to take advantage of her. This is actually a two-sided statement. Eating tofu means that men take advantage of women, and of course there is also a saying that they are mean to women. Of course, this statement may not be particularly popular, mainly to show that men take advantage of women, but relatively speaking.
Now it is so popular that eating tofu has become a saying that men take advantage of women, which is relatively credible, because this allusion is familiar to everyone, because I believe everyone has read it in previous Chinese textbooks.