They all belong to monsoon paddy agriculture. China's monsoon paddy agriculture is mainly distributed in the area south of the Huaihe River line in the Qinling Mountains. It has a subtropical monsoon climate. Most can produce two to three crops a year. Traditional agricultural farming methods are used. The level of mechanization is low, small farmers operate, intensive farming, and water conservancy facilities are imperfect; while Japan's monsoon paddy agriculture is mainly distributed in the island's plains, most of which have a temperate monsoon climate or a subtropical monsoon climate, with one to two crops a year, focusing on the use of small-scale agriculture. machinery, a high degree of agricultural mechanization, emphasis on water conservancy projects, and a high degree of agricultural modernization; the main crops grown in both countries are rice