Former world champion Ken Doherty eased past Barry Pinches 5-2 in his opening-round match at the Haikou World Open.
Ding Junhui started strongly in his bid to win a record-equalling fifth ranking title of the season as he eased past Li Yan 5-1.
Ding, who has won the German Masters, Shanghai Masters, Indian Open and International championship before losing out to Ronnie O'Sullivan in the final of the Welsh Open this season, amassed breaks of 52, 67, 51 and 128 on his way to victory.
The 26-year-old will now face India's Pankaj Advani in the second round after he defeated Xiao Guodong 5-4.
"I played ok," Ding told www.worldsnooker.com.
"Li played some good safety so it was tough for me during the first few frames. I wasn't worried because I'm well prepared. I will try to concentrate and play better in the next round.
"It's good to be close to the sea so I'm able to relax a bit. It's a nice hotel and venue. I feel relaxed."
In the other matches, Jimmy White was beaten 5-1 by Shaun Murphy to leave his hopes of keeping a tour place hanging in the balance, while Dominic Dale fought back from 4-2 down to beat Michael Leslie 5-4 on the final black.
Alan McManus and Michael Holt also claimed 5-1 wins over Martin Gould and Nigel Bond respectively, while two-time world champion Mark Williams beat Yuan Sijun by the same margin.
Ricky Walden, Matthew Stevens, Marco Fu, Rory McLeod, Robert Milkins and Mark King also came through their first-round matches.
Later on Tuesday, Judd Trump raced to a 5-0 win over Chen Zifan while Kurt Maflin beat Joe Perry 5-1 and Liang Wenbo defeated Scott Donaldson by the same scoreline.
Mark Joyce beat David Morris 5-2 while Ali Carter saw off David Gilbert 5-3.