Wu moved into the senior ranks in 2011. That year she improved her best time to 13.19 seconds, won the Kunshan and Jiaxing legs of the Chinese Athletics Grand Prix and came seventh in the final of the 2011 Asian Athletics Championships. She managed only seventh at the national championships that year. Her breakthrough year came in 2012 and began with her winning the 60 metres hurdles gold medal at the 2012 Asian Indoor Athletics Championships in a championship record time of 8.24 seconds. A string of outdoor wins in China that season, including the national universities championship, concluded in her first national title and a personal best of 12.98 seconds at the Chinese Championships in September.