Chinese Tapei's Lin Wen-tang shot an impressive eight-under par 64 to take a one shot lead after a disrupted second day at the CIMB Niaga Indonesian Masters on Friday.
Lin's round included nine birdies and just one bogey as he sits on 10-under par at the half-way stage one shot ahead of Australian rookie Cameron Smith.
However, 19 players were unable to complete their round as heavy rain brought the second day to an abrupt end.
Joint leader after day one, Malaysia's Nicholas Fung, shot a three-under par 69 but dropped down to a share of third with Thailand's Chapchai Nirat who fired a second successive 68.
Lin, a winner of six Asian Tour titles, had to withdraw from an event in Malaysia last week due to heat and fatigue but felt the cooler conditions on Friday suited him.
"I wasn't feeling very well coming to this week. I had to withdraw from the tournament in Malaysia last week because the weather was just too hot! I spent two days resting in the hotel," he said.
I have never slept so much before it was quite scary. I guess my body really needed some rest.
"I don't really like playing in the hot weather. I've to walk with an umbrella and use ice to cool my face all the time.
But I guess I had an advantage today because the weather was cooler when I started in the morning. I putted better than yesterday too."
Austrian Bernd Wiesberger is attempting to defend his title but suffered an inconsistent day. He finished one-under par but finished his round in style to keep himself in contention five shots adrift on Lin.
He began on the 10th hole but made a bogey and then a double-bogey on hole 14 and 15 and made amends with a birdie and an eagle on eight and nine to finish the day.
South African and major winner Louis Oosthuizen is a shot further back after a solid 68, while France's Victor Dubuisson got himself to one-under for the tournament after following his opening 74 with a 69.
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