Why is white water tofu called toufu?

Tofu is now called doufu in foreign countries. After the early Chinese immigrated to the United States, they immediately took root and added many Chinese pronunciations to the English dictionary without consulting you, such as: Kung Fu (Kongfu), Toufu (Toufu), Dama (Dama), Shagua (Shagua), Bok Choy (Bok Choy), and also brought the Chinese concept of big family to the United States.