Is it okay to add cold water halfway when cooking meat?

　　Is it okay to add cold water halfway when cooking meat?

　　In fact, because meat, bones and other foods contain a lot of protein and fat, the sudden addition of cold water during the cooking process will cause the temperature of the soup to drop sharply, causing the protein and fat contained in the meat and bones to quickly solidify, shrinking the spaces between the meat and bones, making it difficult to cook, and affecting the delicious taste of the meat and bones themselves.

　　Therefore, if you want to add water during cooking of meat and bones, you can only add hot water, not cold water.