The traditional three delicacies fillings include meat three delicacies (pork, shrimp, eggs) and vegetarian three delicacies (leeks, eggs, dried shrimps). However, in fact, the three delicacies stuffed with meat and vegetables are more balanced in nutrition and the best. The ratio of meat to vegetables can reach 1:1, and the meat should be 30% fat and 70% lean. Nowadays, three of the three fresh stuffings have become a general term, and stuffings made of four or five ingredients are also very common.