What is the small tofu in Northeast China?

Small tofu, a northern custom food, is very common among Shandong people. Also known as Qing Zi, Zafan and Cheng Mozi. The taste is light, especially the dipping sauce. Tofu has nothing to do with tofu. With radish tassels, shepherd's purse, chrysanthemum, cabbage, spinach and so on. As the main ingredient, add bean paste or bean powder to boil, which is fresh and delicious and deeply loved by the people. Hotels and restaurants also entertain guests with first-class tofu, mostly green beans, plus egg white, diced shrimp, diced sea cucumber and diced meat. Taian flavor snacks. Tofu in Northeast China is made by grinding cooked soybeans with stone mill and water.