What are the homework done in spring, summer, autumn and winter?

Spring begins in the beginning of spring, and it is ready for spring sowing, and ends in Xiaoman solar terms. Homework completed in spring, summer, autumn and winter is something that can be done in every season. The spring operation starts in beginning of spring, the sowing is ready in spring, and the solar term ends in Xiaoman, and the field management, topdressing, weeding and ridging are carried out from the awn seed. And start the autumn harvest season from the equinox solar terms. Farmers began to harvest crops, starting from beginning of winter, and let the recovered grains naturally dry and store in winter. In this way, homework is also going on all year round. Homework is the task assigned by the instructor in class, and it also refers to what needs to be completed.