Brad Stewart, who runs the Stewart Farms Partnership, does winter maintenance on farm machinery at a garage in Yorkville, Illinois, the United States on Feb. 12, 2018. For the Stewart family who has farmed for three generations on this vast stretch of farmland in the northeastern part of Illinois in the United States, farming is an important career rather than just livelihood and trade disputes with China need to be avoided for the prospect of agricultural exports. (Xinhua/Wang Ping)