The oranges have unique growth conditions. Zigui is located in the head of the Three Gorges Dam, with very few industrial production activities, and the pure soil and water source far away from pollution is preserved. The ecological is excellent. The back is blocked by Qinba Mountain. The natural water system of the Three Gorges Dam has made Zigui a unique warm winter climate area in China. Zigui uses the altitude difference to find different alfalfa orange varieties suitable for development area, is the earliest in China to achieve "spring and late, summer and summer orange, autumn and September red, winter with Newhol" four seasons of fresh oranges, lock different varieties of alfalfa orange growth the best location. The sweet and sour orange is delicious, the content of vitamin C is high, the freshness is high, and it is more safe for health. It is the ideal flavor of good oranges.