Sour plum soup is a traditional drink in Old Beijing, and it is widely believed that Zhu Yuanzhang invented it. Legend has it that at the end of the Yuan Dynasty, a plague occurred in Xiangyang, Hubei Province, and Zhu Yuanzhang happened to be selling plums to this area, and was bedridden with the disease, and stayed in the "Plum Horse Recruitment Inn", and occasionally ate plums and felt refreshed, and then used to make the soup, and the body soon recovered. So, he boiled all the plums into sour plum soup and gave it out for free. At this time, Xiangyang city, there are nursery rhymes, said: "osmanthus blossoms, the fragrance of umeboshi, Jiangnan monks do businessmen, the left golden cock, the right Jade Rabbit, rise in Xiangyang." Language more implicitly Zhu Yuanzhang anti-Yuan, the city's richest man Shen Wansan is jealous of everyone who misses the good deeds of Zhu Yuanzhang, they reported to the government, Zhu Yuanzhang fled in a hurry, to the village of Jiawei, was forced to rate the villagers rebel, just did not go out of the Xiangyang border, and later set up the Ming Dynasty, the Ming word left for the day, like the Golden Rooster, the right for the moon, like the Jade Rabbit. This legend is quite absurd, because Zhu Yuanzhang has not been a merchant, and not in Xiangyang, and Shen Wansan is Jiangsu and Zhejiang, how to become the richest man in Xiangyang? Legend renders that Zhu Yuanzhang's wife, Ma Daqi, is the daughter of one of the two shareholders of "Mei Ma Zhao Inn", which is especially absurd. However, the legend also twists and turns to reflect some of the facts of history, Zhu Yuanzhang for the suppression of the powerful, for no reason to exile Shen Wansan, Shen had to repair the wall of Nanjing donated a lot, but Zhu inner jealousy, revenge, this is a shocking case of injustice. This legend goes in the opposite direction, fabricated a previous feud between the two, but also help Zhu Yuanzhang find a step down. However, in the past, the craftsmen very much believe in this legend, so the old Beijing sour plum soup stalls in front of more than a crescent shovel, made of white copper, because Zhu Yuanzhang had been into Buddhism, the crescent shovel for the Buddha's appliances, in order to pay homage to the inventor. This shovel is unique everywhere in the center part of the crescent moon to be engraved with a "day" character, suggesting that the Ming. Even if the streets, but also with two small copper bowl, known as the "ice", the two hit, soliciting customers, is said to be transformed from the Buddhist musical instruments hand chime.