Maocai first appeared in the 1990s. At most, some vegetable options have been added under the original conditions.
Actually, maocai has nothing to do with Mala Tang, and even maocai copied it. The inheritance of Mala Tang in the northeast is the spicy rinse tripe in the northwest, which has nothing to do with Sichuan. It's not just Sichuan that eats spicy food. The northeast mala Tang with sesame sauce is a typical northwest rinse tripe practice. Yang Guofu was the first to cook barbecue, and it was also the practice of rinse tripe in the northeast (rinse tripe in the northwest). At that time, only noodles were sold, also called spicy noodles. Later, Yang Guofu pioneered the model of optional scales for side dishes.