JUDD Trump gained the ultimate revenge on Mark Joyce by storming into the last 16 stage with a 5-0 win.
Joyce caused a huge upset back in December when he knocked Trump out of the UK Championship in the opening round but there was not to be a repeat in Haikou as the world number one eased to victory.
The Bristol star will meet Nigel Bond for a place in the quarter-finals, the pair have only met once before with the latter winning 3-2 in 2006 when this competition was known as the Grand Prix.
Defending champion Mark Allen kicked off the defence of his World Open title with a 5-2 win over Welshman Ryan Day despite falling 2-0 behind early on.
The Ulsterman pulled a frame back before levelling the match at 2-2 winning a crucial fourth frame by potting the final brown, blue and pink. Allen, ranked ninth in the world, then dominated the match as breaks of 52, 84 and 78 booked him a round two tie against Robert Milkins.
Australian Neil Robertson beat Dominic Dale 5-2 despite his highest break only being 49. And his next opponent Graeme Dott also recorded a victory of the same scoreline as breaks of 139, 98 and 83 helped him to beat Jamie Cope.
Matthew Stevens looked to be heading out of the tournament at the first hurdle when he trailed 3-0 and 4-2 to David Gilbert. But the Welshman fought back and won the last three frames to record a thrilling 5-4 win.
And Shaun Murphy pipped Martin Gould to the post in the other first round encounter. Gould had the lead on four different occasions throughout but could not take advantage as the 2005 world champion battled to a 5-4 win with a top break of 118.
Two of the remaining wildcard matches were also played on the second day as Ian Burns cruised to the last 32 stage with a 5-1 win over Saleh Mohammadi. But there was no such joy for fellow professional Andrew Higginson who crashed out after a surprising 5-1 defeat to Zhou Xintong.
Day three of the tournament sees UK Championship and Masters winner Mark Selby take on 15-year-old talent Lyu Haotian, an all Scottish afair between John Higgins and Alan McManus and home favourite Ding Junhui will aim to please his fans when he takes on Michael Holt.