Peter Uihlein has opened up a one-shot lead at the midway stage of the Shenzhen International.
The world number 180 recorded five birdies during a second-round 68 to edge in front of Kiradech Aphibarnrat, who hit a three-under-par round of 69.
Four players, including England's Matt Ford, sit three shots adrift of the leader, while Tommy Fleetwood and Matteo Manassero occupy a top-10 place after solid rounds on Friday.
A round of 74 from Bubba Watson has seen the American fall down to 42nd position, but Nicolas Colsaerts didn't make the weekend after a five-over-par round of 77.
