When are winter wheat and spring wheat sown and harvested in North China, Northeast China and South China respectively?

Spring wheat is planted in the north and winter wheat is planted in the south. The sowing period of spring wheat in northern China is from mid-March to late April, but the high-yield fields are mainly concentrated in the middle and late March. The planting of spring wheat in Northeast China generally begins from mid-March to late April, but the high-yield fields are mainly planted from late March to early April. Jiangnan generally belongs to the Yangtze River basin. Winter wheat in the Yangtze River basin is planted in winter, and its geographical location is different. From south to north, the harvest time is generally early in the south and late in the north, early in winter (wheat) and Spring Festival Evening (wheat).