Du broke the deadlock for the hosts in the 37th minute before Martinez doubled his side's advantage six minutes after half-time.

But Krung Thai, who lost their opening match against Kashima 9-1, were soon level when they scored twice in five minutes through Thaensopa Nantawat and Pichitchotirat Peeraphong.

Du eased his side's nerves when he netted after 74 minutes and Martinez made sure of the points a minute later.

The game suffered a tame opening with Ghana international Kone Kassim's speculative shot after 23 minutes forcing the first save of the match from Yan Zhi.

Beijing's Yan Xiangchuang had the ball in the net five minutes later but the effort was ruled out for offside.

The hosts were ahead eight minutes before the break when Honduran international Martinez crossed for Du who spun and shot to give his side a deserved lead.

Six minutes after the break Lee Jang-soo's side looked to be on their way to a comfortable victory when Tao Wei beat the offside trap and fed Martinez who scored from close range.

However, the visitors showed more resolve than their opening fixture and claimed a goal back when Nantawat curled home a long-range effort after 58 minutes.

And they were level five minutes later when Peeraphong was put through on goal to score and set the stage for a potential shock.

However, the hosts would take just 10 minutes to re-establish their advantage with two goals in as many minutes.

Substitute Sui Dongliang was the architect of the first goal when he set up Du to tap home before Krung Thai's valiant resistance was finally ended a minute later when Martinez claimed his second.