Chen, ranked 802nd in the world, had a three-putt on the 18th to register his only bogey of the day as his advantage over second-placed duo Sarit Suwannarut of Thailand and Chinese amateur Ding Wenyi was trimmed by a shot.

Sarit hit the lowest round of the day when his eight birdies earned a 65 that moved him into contention, level with 18-year-old amateur Ding, the runner-up in this event in 2020.

Eugenio Chacarra had held a one-shot lead overnight after going nine-under par over the first two rounds but, after picking up an additional stroke on the ninth, the Spaniard's challenge stalled as he slipped into a five-way tie for fourth.

A bogey at the 14th was followed by a double-bogey at the next hole and he finished six shots adrift on eight-under par following a one-over-par third round.

This year's China Open is the first to feature foreign professionals since 2019.

Only China-based golfers were permitted to play in 2020 and 2021, with entries restricted due to the government's stringent zero-COVID measures.