Catering professional schools or vocational and technical colleges: Many catering professional schools or vocational and technical colleges offer China specialty food making and other related disciplines, and may have courses on cold noodle making. You can try to contact the local school to find out the situation.

Chef training institutions or cooking school: Many training institutions or cooking school offer cooking-related courses, including cold noodle making techniques. You can search local training institutions or schools to see if there are any related courses.

Professional chef team or chef training studio: Some professional chef teams or chef training studios may offer courses on making cold noodles, which can help you master the production techniques and details. You can find these teams or studios by searching or consulting professionals in the catering industry.