Yun Hyon-hi scored twice while Kim Un-hwa and Kim Un-ju also got on the scoresheet to seal a comprehensive victory for the Koreans.
After a hard-fought opening 20 minutes, DPR Korea took the lead when Kim Un-hyang displayed great vision as she split the China defence with a fine pass into the path of Yun and the forward slotted home with a clinical low finish.
Yun then tested Yang Yan from distance but the China keeper held her low strike before the North Koreans came close to a second goal in the 25th minute when Jo Yong-ae saw a shot smack back of the post and Kim Un-hwa put the rebound wide.
Kim Un-hwa fired too high from range and Yun headed Kim Un-hyang’s cross from the right narrowly over the bar with a minute to go before the interval.
But DPR Korea extended their lead with virtually the last kick of the half as Kim Un-hwa showed good composure to fire low into the bottom corner past Yang from inside the box.
Yao Shuangyan’s overhead kick from Wu Haiyan’s free-kick almost brought China a goal but it was the Koreans who struck again in the 66th minute when substitute Kim Un-ju’s shot from the edge of the box found the back of the net via the inside of the far post.
China were incredibly unfortunate not to get on the scoresheet a minute later when Wang Shuang was sent clear but after expertly lobbing the onrushing O Chang Ran, she saw the ball bounce up onto the bar and over the top.
Kim Un-hyang curled a shot just beyond the far post in the 71st minute and 10 minutes later, Yao glanced a free-kick narrowly off target at the other end.
Kwon Song-hwa could have added a fifth goal in stoppage time when she raced clear down the left but after cutting inside a defender, side-footed disappointingly wide.