What is the most nutritious food for breakfast in China (more traditional China people don't want bread and so on)

I think it's best to eat porridge (coarse grains), fruits (preferably apples and tomatoes, some fruits can't be eaten on an empty stomach), milk (I prefer yogurt and pure milk) and fried eggs (boiled eggs are also good) in the morning, which can provide the spirit for the whole day, but you can't eat anything too greasy. It's bad for your stomach. Of course, you can make your own rice balls and serve them.