Jordan Sherratt, who was the joint second round leader with Han, ended the tournament in a tie for 3rd position at 6-under-par, along with Peter Spearman-Burn from New Zealand and South Korea's, Mee-Whee Kim.
Sherratt, a dual international winner this season, fired rounds of 66-69-74-73 to be the best placed Australian at the Championship.
Matthew Giles fired the final day's low round of 68 to jump twelve places to finish the tournament in 6th place, after earlier rounds of 71-71-73. Giles fired off his fourth round with four consecutive birdies before adding extras at the sixth, 10th and 11th holes to get to seven-under and share second place at one point. A double bogey when he found water at the par-three 13th halted his charge, but it was a solid return tournament for the US based Australian.
Giles, whose coming off a recent wrist injury, will be feeling confident with his game following this week's tournament in China as he heads back to Australia to play the Australian Masters at Kingston Heath starting 12 November.
Han's victory in the Asian Amateur Championship earns the 17-year-old a ticket to the 2010 US Masters and a spot in the International Final Qualifying for the 150th Open Championship at St Andrews.
Leading by two shots overnight, Han crushed the competition with a final round two-under-par 70 at Mission Hills Golf Club's World Cup Course.
Daniel Nisbet fired a closing 2-under-par 70, to move into a tie for 11th after earlier rounds of 72-72-73, whilst Matt Jager finished in a tie for 22nd at 1-over-par following rounds of 72-73-74-70.
The final Australian to make the cut, Brendan Smith, ended his tournament with a 4-over-par, 76, to slip down the leader board to a tie for 40th at 7-over-par.
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