Career
They defeated Helen Nichol and Charmaine Reid of Canada in the first round but were defeated by Lee Hyo-jung and Hwang Yu-mi of of Korea in the round of 16. They defeated Chris Dednam and Antoinette Uys of South Africa in the first round but lost to Zhang June and Gao Ling of China in the round of 16. At the 2008 Olympics, Cheng again teamed with Chien Yu Chinese in the women"s doubles, reaching the quarter finals.
This team also reached the quarter finals at the 2012 Summer Olympics.
She competed in four Asian Games from 2002 to 2014.
