Mike He
A pair of brother and sister - Li Zheng (played by Mike He) and Li Ying (played by Gao Fei) one happened to be a love detective and the other a love expert, when affluent businessman Xiao Feng turns up, requesting the agency test the waters with his bride-to-be, pretty psychiatrist Fei. Li Ying is immediately overwhelmed, seeing Xiao Feng as a potential catch rather than a customer.