The 21-year-old was one of a European Tour-record nine golfers vying for the lead on eight under at the midway stage.
But he moved clear of the field on 14 under yesterday, with South African Jaco van Zyl and Spain’s Nacho Elvira his nearest pursuers – both members of that nine-strong group.
Englishman Nathan Kimsey, meanwhile, moved up for a share of fifth place – only four shots away.
The 23-year-old charged up the leaderboard, matching his opening round of 66 after falling off the pace on Friday when he shot 74. His six-under effort was bettered only by Wang’s bogey-free round, and it left Kimsey alongside fellow Englishman Andy Sullivan and three others.
Scotland Richie Ramsay impressed with a three-under round of 69 for five under, ten shots off the lead. David Drysdale is a shot further back after a 70. The only other Scot to make the cut, Marc Warren, shot 73 and is over for the tournament.
Among those falling off the pace set by Wang were England’s Jordan Smith and Antony Wall, who just broke par to be eight under alongside compatriot Oliver Fisher.
After his flawless round, Wang confirmed his liking for the breezy conditions and admitted he is beginning to fancy his chances of closing out victory.
“My irons and putting are really good this week, so I think I have a good chance to win,” he said.
“I like this course. I like the wind, the green conditions.”