Watermelon, as its name implies, is a melon from the western regions. Five dynasties ago, it was not called watermelon because it had been introduced to the southeast coastal areas of China. Because of its cold and antipyretic nature, it was called cold melon. Watermelon is a typical fruit and the main fruit in summer. As long as there is frozen watermelon in hot summer or hot tropical night, it will have the effect of relieving summer heat.

Watermelon is the main fruit in summer. Mature fruit contains a lot of water, and the sugar content of pulp is generally 5 ~ 12%, including glucose, fructose and sucrose. The sweetness increased with the increase of sucrose in the late mature stage. There is almost no starch, and the sweetness will decrease due to the hydrolysis of disaccharide into monosaccharide during storage. Melon seeds can be used as tea, and melon skin can be processed into watermelon sauce. Chinese medicine uses melon juice and peel as medicine, which can clear away heat and relieve summer heat.

It can be called the king of melons. It was introduced from the western regions in the Han Dynasty, so it was called watermelon. Watermelon also belongs to the genus Cucurbitaceae, which is native to Africa. At present, except for a few remote and cold areas, it is planted all over the country, and the fruit is sweet and cold.