Langjiu, from Erlang Town, Gulin County, Sichuan Province, is a symbol product of chinese national geography. Langjiu is located in Erlang Town, Chishui River, and is located in the high-quality zone of Maotai-flavor liquor brewing. Chishui River, known as the "River of Fine Wine" since ancient times, gave birth to two maotai-flavor liquors in China, Maotai and Qinghualang. In addition, Langjiu also has the world's largest natural wine storage cave-Tianbao Cave, which is mellow and fragrant, aged and mature.