Finland’s Tapio Pulkkanen and Spain’s Jorge Campillo, who both started the day tied for the lead, slipped to second and third place respectively after they returned with a 68 and 69 at the Genzon Golf Club.
Chinese amateur Kuang Yang endeared himself to the galleries when at 14 years and 170 days, became the second youngest player on the Asian Tour to make the halfway cut which was set at two-under-par.
India’s Khalin Joshi, a one-time Asian Tour winner, enjoyed a revival in form as he will also feature in the weekend rounds for the first time this season, having missed the cut in all six starts prior to this week’s Chinese showpiece.
The Indian signed for a 70 which placed him in a share of 23rd place, eight shots back of Wu.
Wu got his round going in the morning with an opening birdie on his back-nine 10. He headed towards the turn with another three birdies on 13, 15 and 17 and added another two more birdies on the first and third hole after the turn.
However he was left to confront his nemesis on the par-four five again when he dropped another shot there for the second time.
Wu, who won the Volvo China Open in 2015, then stormed home by closing with another two birdies in his last three holes to sign for a two-day total of 13-under-par 131.