Nakai, who shared the first-round lead among non-Chinese mainland players with Singaporean Nicklaus Chiam (85), held steady to finish two-over. His round featured three birdies and four bogeys.

"My game wasn't very good today, but I didn't give up and stayed focused until the end. The greens were tricky, and most players struggled, but I never gave up and held on until the end," said the Tokyo native. "I'm very happy to finish first and qualify. This is my second time participating in the Volvo China Open and I aim to finish in the top 10."

Shen, a five-time winner on the amateur circuit, most recently at the Hong Kong Close and Mid Amateur Championship in January, carded a round featuring a lone birdie three at the 394-yard seventh hole and a double-bogey six at the 456-yard 14th.

"The weather today was much better than yesterday, and I expected the scores to improve compared to yesterday. That's why I thought I couldn't play conservatively," said the 21-year-old, 117th in the World Amateur Golf Ranking. "I wanted to push forward and catch up, rather than wait for others to make mistakes and fall behind. I think I did quite well in that aspect today. Although I missed quite a few opportunities, my overall performance was solid."

Enhance Anting Golf Club is a 7,065-yard, par-71 layout designed by Robert Trent Jones II in Shanghai.