If You Are the One( simplified Chinese :非 诚 勿 扰; pinyin :Fēichéng Wùrǎo; literally "not sincere, don't bother") is a 2008 Chinese romantic comedy film directed by Feng Xiaogang and starring Ge You and Shu Qi . The film has been very successful at the Chinese box office, and has became one of Feng's top grossing films to date, and has earned over ¥ 364 million (US$53.7 million) at the box office.

Qin Fen (Ge) is a man in his late 40s who returns to China after many years overseas. He becomes a multimillionaire after selling an "innovative invention" to a high-profile (but foolish) angel investor (Fan). With his new fortune, Qin decides to put an end to his bachelor life and advertises open invitations to potential partners online, citing only "if you are the one", which actually means "don't disturb if not sincere".

Subsequently, he encounters various candidates from a homosexual former friend, a cemetery saleswoman, a pathological amnesiac, an ethnic minority pecking hen, an erotophobic widow, an expecting single mother to a stock-holding trader. Eventually, he crosses path with air stewardess Liang Xiaoxiao (Shu). While helping Liang get over her agonizing love affair with a married man (Fong), Qin strikes up an unexpected friendship with Liang, which eventually blossoms into love during a trip to Hokkaido.