If you won 514 million yuan ($80 million), would you rush to claim the prize? The answer is no for the winner of last month's welfare lottery in east China's Zhejiang province. Thirty-one days have passed since the lottery was held and no one has claimed the money, Nanfang Daily reported.

The winner would receive at least 5,700 yuan a day in interest if the money was deposited in a bank. Which means the delay of claiming the prize has already cost the winner about 176,700yuan.

The Zhejiang Provincial Welfare Lottery Center said that the prize will be invalid if the winner doesn't claim the prize within 60 days after the announcement, which is September 24. The organization will keep the name and the personal information of the winner will remain private.

Meanwhile, a second drawing on the same day with a prize worth 51.4 million yuan -- also in Zhejiang -- hasn't been awarded either. Many suspect that the two prizes belong to the same person.

By Chen Yingqun