Career
Su holds Chinese records in the 60 metres (652 seconds), 100 meters (999 seconds), and 4 × 100 metres relay (3792 seconds). He is the only man of Asian descent to run the 100m in under 10 seconds. He broke onto the continental scene with three straight wins in the 100 metres on the Asian Grand Prix in May 2009.
His first medal came in the 4×100 metres relay at the 11th Chinese Games later that year, where he helped the Guangdong team including Liang Jiahong and Wen Yongyi to the gold medal.
He took the individual 100 m title at the East Asian Games, defeating Japanese rival Shintaro Kimura. He equalled the Chinese indoor record in the 60 m in Chengdu in 2010, running 6.58 seconds.
In March 2011, he set a new Chinese national 60 metres indoor record in Chengdu with a time of 6.56 seconds. In 2012 he was a 60 m semi-finalist at the 2012 IAAF World Indoor Championships and a 100 m semi-finalist at the 2012 Summer Olympics.
With the Chinese relay team he ran national records twice that season, timing 38.71 seconds in May and improving to 38.38 seconds with Guo Fan, Liang Jiahong and Zhang Peimeng in the heats of the Olympics.
His 2013 began with two 60 m national records in Nanjing, where he ran 6.56 seconds and then 6.55 seconds. Zhang Peimeng beat Su"s 100 m national record in May 2013, but Su responded with a personal best of 10.06 seconds at the IAAF World Challenge Beijing. On 23 August 2015, he reached the final of the 100m at the World Championships in Beijing with a time of 9.99 seconds in his semi-final.
In the final, he finished his race with the time 10.06 in position 9th.
60 metres: 6.50 seconds (2016)Arkansas NR
100 metres: 9.99 seconds (2015) NR
200 metres: 21.23 seconds (2008)
2015.05.30, 9.99, IAAF Diamond League 2015, Eugene, United States of America
2015.08.23, 9.99, IAAF World Championships in Athletics 2015, Beijing, People"s Republic of China.