Kumquat, orange and grapefruit belong to Rutaceae. But the medicinal effect is different.

Kumquat: quenching thirst;

Chenpi (orange peel): regulating qi and strengthening spleen.

Grapefruit: the flesh is fragrant, sweet and sour, cool and moist, rich in nutrition and high in medicinal value. It is a favorite fruit. Shen Nong's Notes on Materia Medica is referred to as "pomelo" for short. Guang Zhi is called "Lei You". Tao Hongjing was originally named "Grapefruit". There are also aliases such as "Huyou", "smelly orange", "Zhu Luan" and "Wendan".

The world's four famous pomelo: Shatian pomelo in Guangdong, Pingshan pomelo in Fujian, Wendan pomelo in Thailand and Siam pomelo.

Medicinal value of grapefruit: resolving phlegm and relieving cough, treating cold and cough, food stagnation and wine injury, regulating qi and stopping vomiting, food stagnation.