Rock sugar jujube and winter jujube are one variety. It's just a different name. Winter jujube is commonly known as rock sugar jujube and apple jujube, which is characterized by its early fruiting, and it can bear fruit in the same year of grafting. 10 ripens in the first half of October, and the fruit is nearly round, with a smooth and smooth surface, a little like a small apple, crisp and sweet fruit, and a small core. Because of more water, it is not easy to preserve, and its pulp is cyan and bluish white. Its pulp contains many vitamins.