Soomin Lee will take a three-shot lead into the weekend after a sublime second round at the Shenzhen International on a day which was disrupted by the weather.
Only 35 players were able to start their second rounds at the Genzon Golf Club due to thunderstorms, heavy rainfall and the threat of lightning which resulted in almost six hours of play being lost.
Lee took advantage of being able to start and finish his round, carding a seven-under 65 to go 13 under at the halfway mark on a course where he won the China Open two years ago.
The impressive South Korean, bogey-free through two rounds, made a birdie at the 11th before the horn sounded but carried on where he left off when play resumed with further gains at the 12th and 13th.
He also picked up shots at the 17th and 18th, before taking his tally of birdies to the week to 13 on the front nine to put himself in a strong position.
Joost Luiten moved into second place with a six-under 66, including an eagle two and six birdies in eight holes before bogeys at the fifth and eighth pegged the Dutchman back.
Luiten had been in front at the turn after reeling off four birdies in a row to move to 10 under, which is the score he ended up on when he returned to the clubhouse on Friday.
Paul Dunne and Brandon Stone are tied for third on seven under following second rounds of 69 and 70.
Lee Slattery made an ominous charge after he finally teed off in Guangdong, making four birdies in the five holes he was able to play before his momentum was halted by bad light.
The Englishman will resume his second round seven shots off the lead, level with Alexander Levy on six under with the Frenchman level par through three holes of his second round.
Two-time Masters champion Bubba Watson is back on two under having picked up a shot at the only hole he was able to complete.