Ganlu has a long history and is a popular pasta in the north and northwest regions. Legend has it that as early as 1,400 years ago, our ancestors used ox horns to drill 6 or 7 small holes, which were as big as thick twine. The batter was put into the ox horns and dropped into a pot of boiling water to cook noodles. The origin of the river leaks. During the Kangxi period of the Qing Dynasty, Emperor Kangxi assigned a special person to conduct statistics on snacks across the country, and "River Leak" was reported to the court as one of them. Kangxi saw "River Leak" and attracted attention because of its weird name. After eating it, he was full of praise for its unique flavor. However, because the homophonic pronunciation of "河流" was incompatible with the management of rivers, Kangxi was unhappy and changed the word "河流" to "饸饹".