Where to learn hot and sour powder depends on which city you are in. People in every place have different tastes, just like some people like spicy food and some people like sour food. See what tastes your people are suitable for. Guan Xiangxing Snacks Hot and sour powder made by a friend is suitable for people here in Shaanxi. Delicious taste, hot and sour powder can better grasp people's appetite, in line with modern people's pursuit of healthy diet.