There is a record of "private kitchen" in the Book of the New Tang Dynasty: "Since Li Baozhen became the minister of military aircraft, the private kitchen has 6,000 Fermi stones, 1,000 sheep and dozens of bottles of wine every month, and the people of Lu are very sleepy. When you are beautiful, you will learn to walk, and you will be self-sufficient in money, things and things. " In ancient times, all the dignitaries had their own deep-seated kitchens, and the chefs in these kitchens were mainly responsible for serving these dignitaries. Later, the profession of chef appeared more and more in restaurants, but with the development of society, kitchens or individuals cooking for private people appeared again. Such private chefs no longer serve only dignitaries as in ancient times. Now they usually make and manage food in their own homes, and food lovers will choose to eat it at home or deliver it themselves.