An agricultural technician tests the germination rate of rice seedlings at Youyi Farm Co., Ltd. under Beidahuang Group in Shuangyashan City, northeast China's Heilongjiang Province, March 19, 2025. Farming activities are in full swing across Heilongjiang, China's largest grain producing province, in early spring. (Xinhua/Wang Song)

　　A staff member maintains the autonomous seeding intelligent system at Youyi Farm Co., Ltd. under Beidahuang Group in Shuangyashan City, northeast China's Heilongjiang Province, March 19, 2025. Farming activities are in full swing across Heilongjiang, China's largest grain producing province, in early spring. (Xinhua/Wang Song)

　　A staff member maintains the navigation system of an autonomous seeding machine at Youyi Farm Co., Ltd. under Beidahuang Group in Shuangyashan City, northeast China's Heilongjiang Province, March 19, 2025. Farming activities are in full swing across Heilongjiang, China's largest grain producing province, in early spring. (Xinhua/Wang Song)