Xiaolongkan self-heating hot pot is eaten like this: open the vegetable bag, meat bag and bottom bag in turn, put them into the food box, add warm water for later use, and then open the heating bag. Be sure to add cold water here and wait quietly for 15 minutes before eating. Hot pot, called "ancient style soup" in ancient times, was named after the food was put into boiling water and made a "splash" sound. It is an original food in China with a long history. Ding ware in Zhou dynasty should be the earliest prototype of hot pot. According to research, there were hot pots in the Warring States period, when people used clay pots as pots. In the Song Dynasty, eating hot pot was very common among the people. In Lin Hong's cookbook "Shanjia Qing Palace" in the Southern Song Dynasty, eating hot pot with friends was introduced.