The temperature difference between day and night in Xinjiang is large, and the temperature at night is low, which is not conducive to the enzymatic activity of degrading sugar, so the sugar accumulated during the day is stored in large quantities.

Xinjiang is located in the northwest inland of China, far from the ocean, and has a continental climate. This climate is hot in Leng Xia in winter, with little rainfall and very dry climate; There are many sunny days and plenty of sunshine. Although the climate is dry and there is little rainfall, the abundant sunshine melts the snow and ice on the mountain and brings valuable water to the crops. The high temperature during the day can strengthen the photosynthesis of crops and is beneficial to the accumulation of nutrients. The low temperature at night weakens the absorption of crops and reduces the consumption of nutrients. Therefore, fruits and vegetables grow big and sweet.

Sweet grapes are also the reason.

Turpan is located in the basin, bordering the desert, and is the representative place of the above geographical features, so the fruit there is the sweetest.