Why didn’t I think Jujube it has a apple like taste , and you can dry them for storage.
I looked at flora of china it says see level to 2800 meters
Open slopes, sandy soils of plains; sea level to 2800 m. Gansu, Guizhou, Hebei, Henan, Hubei, Jiangsu, Liaoning, Nei Mongol, Qinghai, Shaanxi, Shandong, Shanxi, Sichuan, Xinjiang, Yunnan, Zhejiang.
This species is a famous fruit tree in N and NE China. During its long cultivation, many cultivars have been bred, the fruit of which differ in shape, color, size, and ripening period.
(INDIA apple )