Making fire to cook is cooking, and cooking is also a science. If you can eat, you are a chef, then everyone is a chef. There are many tricks to making fire to cook. At the earliest, people went from raw food to cooked food, from fullness to eating well. This is the road paved by our ancestors. Chefs started from making fire to cook and gradually went further and further. The road became wider and wider, and the branches gradually became more and more. You find your own path and go on it. This is the path of your chef's training. The way of cooking is not about oil, salt, sauce and vinegar, it is the investment of the heart, injecting the soul into the product, this is the way of cooking.