Laohuo soup, also known as Guangfu soup, is a secret recipe of food nourishing and health preservation handed down by Guangfu people for thousands of years. The Chinese old fire soup boiled by slow fire has enough calories and a long time, which not only takes the effect of medicine, but also takes the sweetness of the mouth. She is a delicious soup cooked by women in Guangfu with various warmth, a health-preserving soup for regulating the balance of yin and yang, and a medicinal soup for adjuvant treatment and recovery. Guangfu, that is, Guangfu ethnic group, broadly includes 80 million Cantonese ethnic groups in Guangdong, Hong Kong and Macao and overseas regions (Cantonese-speaking ethnic groups from generation to generation). People in Guangfu have a long history of drinking old fire soup, which is closely related to the hot and humid climate in Guangzhou, and the types of soup in Guangzhou will change with the seasons. Over the years, making soup has become an indispensable part of Guangzhou people's life, and together with Guangzhou herbal tea, it has become a symbol of Guangzhou food culture. As the saying goes, "it's better not to drink soup than to eat vegetables." Some people even made up a sentence, "Eat meat if you can't eat it, and drink soup if you can." Serving soup first and then serving it has almost become an established pattern of banquets in Guangzhou. In this hot summer, after busy work every day, it is very delicious to drink a bowl of old fire soup, which really makes everyone feel comfortable.