 Complete the following phrase:  In 2013, he won the China Youth Championship, beating Lu Ning. His strong results in junior tournaments earned him a wildcard appearance at the World Open. There he defeated Sanderson Lam before losing 50 to Judd Trump in the last 64. He was also a wildcard at the China Open, where he was defeated 52 by compatriot Yu Delu. He also qualified for the 