Because there are eggs on the steamed bread, the fried eggs are dog meat. Eggs are easy to foam, mainly because there is no salt or the cauldron is too hot. It's easy to foam fried eggs when they are hot in a big pot. Adding salt can reduce the foaming of eggs. The main reason is that the oil is not clean, or the pot is not clean. You'd better brush the pan before frying eggs, and use new oil instead of fried eggs, so there will be no dogs.