A gem-engraved painting of Hanoi 's Old Quarter sold for 30,000 USD at the Miss World's charity auction in Shanghai.

The painting was the most expensive piece sold at the auction.

"I came on the stage with Miss Venezuela and Miss Wales. But I was surprised at the final price. It was much more than I expected," said Kieu Khanh, Vietnamese contestant at the contest.

Khanh's ao dai (traditional long dress), which was designed by Ngan An that featured an embroidered image of Tortoise Tower in Hanoi's Sword Lake, received rave reviews at the event.

The final round of the Miss World contest will be held in Sanya , China , on October 30./.