 Complete the following phrase:  In 2010 he improved his best to and placed ninth at the Asian Games. He won four consecutive national titles from 2010 to 2013. The 21-year-old Taiwanese record in the pole vault fell to Hsieh in September 2011, breaking Lee Fu-ans long-standing mark by one centimetre with a clearance of . He was the seventh-place finisher at the 2011 Asian Athletics Championships and improved to fifth place at the 