As winter approaches, the winemaking grapes at the east foothills of the Helan Mountains enter their "hibernation" period. The grape planting area of Jiuxi Winemakers Liang Yuwen, a researcher at the Institute of Horticulture, Ningxia Academy of Agricultural and Forestry Sciences, has 31 years of expertise in the field of grape cultivation and winemaking. Liang Yuwen, a researcher at the …