A pimp had introduced girls to a successful businessman for almost seven years before participating in two blackmail plots designed to net his friends more than $38 million, a court heard yesterday. Senior Government Counsel Liu Yuen-ming told Mr Justice Peter Nguyen that Tsoi Tsz-wan, 25, had been introducing girls to provide sexual services for the businessman, known only as 'Mr X', since 1994. But in January last year, Tsoi and several friends discussed a plan to blackmail the businessman by setting him up with an underage girl, Mr Liu told the Court of First Instance. Mr Liu said part of the plan was to have the girl, 15, keep a sample of Mr X's semen on a tissue paper, which would be used to support a complaint of rape. He said Tsoi believed the group would demand $1 million from the businessman for the return of the tissue paper and for the complaint to be dropped. But during negotiations he discovered the group was demanding $10 million. The businessman refused to pay up, handing over only $40,000. The gang again contacted Mr X around February 20 last year but the businessman slammed down the phone. Three days later, the girl lodged a detailed police complaint against the businessman, who was arrested on April 23. The gang then pressed him repeatedly to pay another $38 million. Mr Liu said a press conference was called on May 14 to air the rape allegation and some Chinese newspapers carried the story. The businessman then lodged a complaint with police on May 22 last year. During subsequent police interviews, Mr X told police he had been blackmailed for $10 million. Tsoi pleaded guilty to one charge of blackmail, one charge of theft and one of conspiracy to blackmail. Sentencing was adjourned. Last week, another member of the group pleaded guilty to similar charges. Wong Hoi-lan, 21, was remanded for sentencing.