First of all, you must choose a very spicy chili. Generally speaking, the chili pepper that is small but sharp is very spicy. It is best to taste it yourself when buying it. It must be both spicy and fragrant. The chili used in chili water is chili noodles. The preparation method is very simple. Roast the chili on the fire until it is slightly black and crispy, then crush it into noodles. This chili is very fragrant. When making chili, you need ginger, garlic, onions, etc. First cut the ginger and garlic into small dices, add salt, soy sauce, vinegar, pepper, etc., and finally add the green onions and chili noodles.