Su came back in August from a chronical back injury and gradually regains his form that saw him equal the Asian record of 9.91 last year in Madrid.
Su and Xie, who also competes in the 200m, will look to qualify for the final which probably consists of American Christian Coleman, winning five legs of Diamond League in 2019 and his compatriots, 100m defending champion Justin Gatlin and Noah Lyles.
Doha athletics world championships kicks off on Friday and runs through to October 6.
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2020-09-15
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