BEIJING, Feb. 14 (Xinhua) -- When the romantic Valentine's Day falls upon China again, new industries crop up silently for lovers, most of which for creating romance, and others are not.

    "I want to propose to my girlfriend in the Valentine's Day but not in an old-fashioned way," said 28-year-old Wu Yonghao in Lanzhou, capital of northwest China's Gansu province.

    Wu and his girlfriend are both movie fans. They planned to enjoy a "world of two" in a projection room watching their favorite movie Waterloo Bridge on the day.

    It is a room with no others eating pop-corns or gossiping aboutthe plots but only a nest of two love birds, as Wu has booked the whole room for the girl he has fell in love three years ago.

    During the movie, Wu will "say" marry me to the girl. However, the flash animation is not uttered by Wu himself, but be cast on the screen.

    "It is a real fresh way for the big day to book a whole projection room, but as a smallest room with 70 seats costs 2,000 yuan (about 258 U.S. dollars) when a movie ticket costs only 20 yuan, it is not affordable for every young man " said the manager of the movie theatre.

    Customers could choose the film they wanted to show on that day, and devise their own "love oath" cast on the screen.

    "I believe I will succeed in winning her nod," Wu said with a big smile.

    When the boy is preparing for his movie romance, "virtual stars" on the Internet are being sold at high prices by a website based in east China.

    In Hangzhou, capital of Zhejiang province, a website sells stars from the twelve constellations to men who are worried about giving a novel Valentine's Day gift to their sweethearts.

    A normal "star" costs 800 yuan (about 103 U.S dollars) and the buyers could have their beloved ones' names appear on the website with the star.

    To date, several hundred "stars" have been sold, and according to owner of the website, the most expensive star has been sold for 8,000 yuan (about 1,031 U.S dollars).

    "It is bound to sweep my girlfriend off her feet," said a buyer surnamed Li.

    In the same province, however, not everyone is brain storming to create romance -- someone chooses to destroy it.

    Many wives called in a private detective office ahead of the Valentine's Day in the hope of finding out with whom their husbands would be out on the holiday.

    "We receive about ten calls each day requiring investigation into extra-marriage affairs on the Valentine's Day since Feb. 6 so that we have doubled the investigation price to 3,000 yuan a day,"said the office owner surnamed Xue.

    Most of the callers are desperate housewives in their forties suspecting their husbands, Xue said.

    Others are men who want a round-the-clock monitor on their pretty girlfriends.

    "And one of the clients is a parent who want to know how their daughter will spent her Valentine's Day", Xue said.

    When the big day draws near with roses in her right hand and chocolate in her left, businessmen's wallets are swelling.