Sago, the proper name of the flower red (Malus asiatica Nakai), also known as Begonia fruit (Hebei), Wenlinlang fruit (Materia Medica), Ringo (Hebei habit see tree illustrations), is a plant of the genus Apple in the family Rosaceae, a deciduous small tree, with ovate or elliptic leaves, cuspidate at the tip, and extremely serrulate at the margins.1 It blooms in the early spring and summer, and is umbrella-shaped arranged at the tops of the branches, and the pedicels and calyxes are all with The pedicels and calyxes are velvety, and the buds are red, fading to a reddish hue after opening. Fruit ripening in autumn, oblate, 4-5 cm in diam. It is widely distributed in the Yellow River, Yangtze River basin and Liaoning area in mainland China, and grows at an altitude of 50 m to 1,300 m. It often grows on raw mountain slopes, flatlands and valley terraces, and tastes like apples when eaten raw, and there are quite a number of varieties, which can be reproduced by grafting, sowing, and dividing. Sweet and sour.