China's Su-per fast unbeaten in season-opening races(1/5)

China's sprinter Su Bingtian wins men's 60 meters title with a season second-best of 6.49 seconds at the IAAF World Indoor Tour meeting in Dusseldorf, Germany, on Feb. 21, 2019. Su, Asia's 100m and 60m record holder, clocked his season best of 6.47 seconds in Birmingham, Britain, on Saturday after a season-opening win four days before in Athlone, Ireland. (Photo/Xinhua)

Su Bingtian (C) prepares before men’s 60 meters event at the IAAF World Indoor Tour meeting in Dusseldorf, Germany, on Feb. 21, 2019. (Photo/Xinhua)

China's Su Bingtian crosses the finish line during the men's 60 meters in Dusseldorf, Germany, on Feb. 21, 2019. (Photo/Xinhua)

China's Su Bingtian in action during the men's 60 meters in Dusseldorf, Germany, on Feb. 21, 2019. (Photo/Xinhua)

China's Su Bingtian in action during the men's 60 meters in Dusseldorf, Germany, on Feb. 21, 2019. (Photo/Xinhua)