I can't. Tongguan steamed buns are made of lard, not donkey oil. Tongguan steamed buns made of lard and flour have crispy skin. The legend of Tongguan Chinese hamburger originated in the early Tang Dynasty. Although history has changed and dynasties have changed, the old Tongguan Chinese hamburger has always adhered to its characteristics of "crisp" and "fragrant meat", which is deeply loved by Chinese and foreign diners and is called "Chinese hamburger".