Because it ripens late, it is called LUN Ye. It is said that the origin of "Wan Lun" is related to the technical innovation team of late-maturing citrus. Since 2005, after several years' efforts, the technical innovation team of late-maturing citrus in Hubei Province has carried out many experiments in Zigui experimental base, and continuously selected, optimized and cultivated a new variety of "Wan Lun". Wan Lun's name came from this.

Wan Lun navel orange is a late-maturing navel orange variety, which matures in the middle and late March of the following year. The fruit is nearly spherical, with an average single fruit weight of more than 200 grams; The skin is light orange-red, hard and smooth, and easy to peel off; The meat is dense, crisp and tender, with much juice and slag. Soluble solid content 12.5%, juice yield 45.5% and edible rate 74. 1%. Wan Lun navel orange has a long growth cycle, flowering in the first spring and maturing in the second spring. Because of the cold in winter, it is suitable for cultivation in low mountain valleys with short frost period in winter. Wan Lun is a late-maturing variety of navel oranges, the output of which accounts for less than 20% of all navel oranges, and the market demand is strong. Compared with Jiangxi, Zhejiang, Hunan and other places, which are susceptible to low temperature in winter, the specific climatic conditions in the Three Gorges reservoir area and the planting areas below 300 meters above sea level on both sides of the river are warm and humid, which is most suitable for developing a late-maturing variety-Wan Lun navel orange.