Ding sets up Fu clash
The Hainan Island crowd will have the second-round clash they wanted to see at the Haikou World Open after Ding Junhui and Marco Fu both won through.
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Home favourite Ding came through a final-frame decider against Michael Holt in the early session, wrapping up his victory with a 50 break.
And Fu, from Hong Kong, then won 5-2 against a horribly out-of-sorts Mark Williams in the evening session.
Ding looked in top form early in the match as breaks of 76 and 95 saw the Chinese quickly open up a lead.
Having been pegged back to 2-2 and then 3-3, a poor positional shot by Holt allowed Ding to make 65 starting with a double, but a break of 99 for Holt took the match to a decider.
Holt was unlucky not to leave the balls safe after missing a long red, but was punished after missing an easy red and then a plant from distance as Ding wrapped up a 5-4 win.
Ding said: "Michael played well and I did well in several frames.
"It's hard to play your best during the opening match of a tournament. But I'll try my best. I'm still bothered by jet lag and I have to go to bed early in the evening."
Later in the day, Williams moved 2-1 ahead with an 86 break but Fu levelled at the interval by winning a nervy fourth frame.
He also took the fifth, Williams conceding with his opponent at the table after Fu ran out of position while comfortably over the winning line.
The next was a tense affair, eventually won by Fu after Williams missed easy pots on blue and brown late in the frame.
There were defeats for the two 15-year-old Chinese wild cards in action today, although Zhao Xintong put up an admirable fight against Stuart Bingham.
Bingham led 3-0 but Zhao battled back, winning a close fourth frame and making short work of the fifth.
The next was tense, Bingham clearing from the blue to level the scores and finally winning the frame after four minutes playing the re-spotted black, and he took the next at one visit to win 5-2.
Lu Haotian was earlier beaten 5-0 by world number two Mark Selby.
The reigning UK and Masters champion went 3-0 up with breaks of 52, 48 and 69 and then took the fourth frame with a composed 73 after Lu had been first in with 64.
A 57 and an exhibition clearance of 73 rubber-stamped Selby's passage to the last 16 and he said: "I thought I played quite well and I didn't give my opponent many chances.
"Lu is a very good player and he'll learn a lot in the next three to four years - and maybe he can be a top 16 player like Ding."
Selby will face Barry Hawkins, his conqueror at last year's World Championship, who made breaks of 60, 93 and 112 in beating Ian Burns 5-1.
John Higgins beat Alan McManus 5-3 and the day's other all-Scottish clash went Stephen Maguire's way as he saw off Marcus Campbell by the same scoreline.
Nigel Bond received a bye after Ali Carter's withdrawal due to a recurrence of his Crohn's disease.