A witness in a champerty case against a local lawyer has been accused by the prosecution of lying in court under instigation. The defence witness, Chan Chi-cheung, 21, was yesterday testifying at barrister Louie Mui Kwok-keung's trial. Mui, 52, had earlier pleaded not guilty to five counts of champerty - the act of striking an illegal deal with a party in a lawsuit to obtain a share of its proceeds - between 1999 and 2008. Mui allegedly took between HK$90,000 and HK$879,750 as part of the damages his clients received. He also allegedly received legal costs from the party sued by his clients after winning cases or having them settled. Prosecutor Steven Kwan yesterday suggested that Chan was lying during cross-examination. "You came to court just to lie for your mother and Mui," he said. Immigration records showed Mui and Chan Yuk-fong, Chan's mother, had travelled together on 14 occasions between 2007 and 2009, the court earlier heard. In two of the champerty cases, Mui allegedly asked for payment to be deposited into an account held by Chan Yuk-fong. Chan's father and Chan Yuk-fong's ex-husband, Pang Mo-fung - one of those with whom Mui allegedly struck a deal - had been called as a prosecution witness. Yesterday, Chan said that when he was 14, he overheard Pang say on the phone that someone had taught him how to get an "advantage" from a lawyer. He believed it meant Pang wanted to frame the lawyer, he said, describing what he overheard as "disgraceful and disgusting". Kwan accused Chan of fabricating the story under the instigation of either Chan Yuk-fong or Mui, something which Chan denied. Lawyers for both sides are expected to make their final submissions before Judge Amanda Woodcock on Monday.