Inbee Park has admitted that she struggled to come to grips with the speed of the greens during her round of 69 at Mission Hills on Friday.
The world number two leads the tournament on the Blackstone Course by one stroke from England's Holly Clyburn and Xiyu Lin on eight-under-par.
Park, who won last year's tournament in Hainan, notched six birdies and two birdies in her round of four-under-par.
"The speed of the greens wasn't as good as last year and I hit a lot past the hole today so I'm going to try to have the speed right so I can make more putts tomorrow and the day after," the Korean said after the round.
"Yesterday was the toughest day we've played here with the wind and heavy conditions. Today there were much better conditions so I thought I could post a better round. It was the same as yesterday, so I feel like I left a few out there but I still have two more days to play so it's very exciting."
Nevertheless, the 24-year-old was pleased with her overall play over the last two days.
"The last two days have been good and very consistent with my ball striking. I had a couple of bogeys every day and those are the mistakes that I can avoid the next two days."