In the 38-event swimming competition, China dominated the gold medal tally with 31 golds and Japan collected 5 while Singapore and Chinese Taipei 1 of each.
In the diving competition, Chinese divers were unbeatable in 10 events at stake while in the synchronised swimming, the hosts had 5 golds.
As a breaststroker, Cheng burst out from her favorite stroke and stormed home in a time of two minutes 12.55 seconds, improving her personal best by three seconds which just produced in a local event last month.
Liu Jing, winner of 400m individual medley and 200m freestyle, had to settle for a silver in 2:13.23. Emi Takabatake of Japan came to third in 2:14.65.
The 21-year=old Cheng said:"It's unbelievable. I didn't expect to win the gold and improve so much within one month. My coach told me to swim all the way just like to swim 50 metres."
Kosuke Hagino of Japan grabbed one gold in the men's 200m medley in 2:01.43, followed by two Chinese Liu Weijia and Sun Han.
Chinese swimmers took the rest seven titles as Chen Huijia claimed victory in the women's 50m breaststroke in 31.37; Cai Li powered to win the men's 50m freestyle 22.55; Bai Anqi led the women's 200m backstroke in 2:09.96; He Jianbin topped the men's 100m backstroke 54.84 and Tan Miao lifted the crown in women's 800m freestyle 8:40.55.
China also ruled the women's medley relay in 4:02.86 and men's 4x100m freestyle relay 3:20.28.
More than 200 athletes from 19 countries and regions have attended the Asian championships.