An insurance product that costs 599 yuan ($90) and guarantees a payout of 10,000 yuan if the applicant marries his or her current sweetheart in three to 10 years became a hot topic ahead of Tuesday's Chinese Valentine's Day.

The applicants are required to submit nonmarital status certificates for both prospective spouses when purchasing the product. If they get married within the specified time frame, they will get 10,999 yuan.

A woman surnamed Wang who works in the customer service department of China Taiping Insurance Holdings Co said there have been numerous phone calls lately inquiring about the product, but she declined to say how many policies have been sold.