 Complete the following phrase:  Lü Xiuzhi ; born 26 October 1993 in Shexian, Anhui is a Chinese female race walker specializing in 20 kilometers racewalking. Lü participated at the 2012 Summer Olympics and placed 6th at result of 1:27:10, she is also the silver medalist at the Beijing 2015 IAAF World Championships in a result of 1:27:45, and the 