There are different opinions about the etymology of the word CHANKO. One of them is that at the end of19th century, there was a "Sumo Hall" (that is, the place where Sumo Lux was trained), and the elderly Lux served as the daily diet chef. Gradually, the rice cooked by Lao Lishi began to be called CHANKO. At that time, in the civilian areas of Tokyo, people called their father Jackie Chan. CHAN's assorted hot pot is also called CHANKONABE(NABE means pot in Japanese).

Lux's day begins with practice. Fierce fighting consumes a lot of physical strength. After practice, they eat assorted hot pot, which is both breakfast and lunch. Eating more meals and keeping fit is also one of Lux's tasks. Assorted hot pot with soup can make people eat more rice. There are meat, fish and vegetables in the hot pot, which can ensure a balanced intake of nutrients. At the same time, because there is a great demand for each meal, and hot pot is suitable for large-scale cooking, it is also more convenient. Gradually, assorted hot pot has become a special meal for sumo wrestlers. 1937, retired lux also opened a two-country lux assorted hotpot restaurant in Tokyo. After World War II, CHANKONABE, which was originally a sumo wrestler's meal, became a kind of ordinary hot pot and was loved by the general public.