2. Ruyi Zhai is a form of fasting monks;

3. Luo Hanzhai was first recorded in Volume II of Zhou Pingke Tan in Zhu Yu in the Song Dynasty, which refers to a period of fasting held by the Guangzhou Chamber of Commerce for monks, and then gradually evolved into a local traditional vegetarian dish, while Ruyi Zhai is still only a form of fasting for monks.