A leading adviser to Beijing has been urged to say he was wrong or consider resigning because of criticism he made of the Court of Final Appeal's landmark ruling on mainland children. The remarks by Dr Raymond Wu Wai-yung, a member of the committee which advises Beijing on how to interpret the Basic Law, were 'totally unacceptable', Democratic Party chairman Martin Lee Chu-ming said. Dr Wu criticised Chief Justice Andrew Li Kwok-nang on Tuesday, saying he should have taken into account the 'public interest' in Friday's court judgment. Dr Wu said the court was wrong to have used common-law principles to interpret the Basic Law. Mr Lee said Dr Wu, a Basic Law Committee member, was advocating the courts should make judgments based not on their understanding and interpretation of the law but on political consequences. 'I think it's frightening and worrying. I hope he considers the matter very carefully,' Mr Lee said. Either he should publicly admit he was wrong and promise not to reflect such an attitude during Basic Law Committee work or he should seriously consider resigning, the Democratic Party leader said. Party vice-chairman Albert Ho Chun-yan said: 'I think the way Raymond Wu criticised the decision . . . not only shows his contemptuous attitude towards the court decision but also demonstrates his total ignorance about the rule of law and about the principle of independence of the Judiciary.' On Monday, Executive Councillor Antony Leung Kam-chung also questioned the use of the common law to interpret the Basic Law. Mr Lee said: 'I think that after reflection he will learn to think and take the advice of the people who know before passing comments of this kind.' Margaret Ng Ngoi-yee, who represents the legal profession in the legislature, expressed regret about Dr Wu's remarks. 'They will result in a further confidence dip among the public in the Basic Law Committee,' she said. Non-affiliated legislator Eric Li Ka-cheung said Dr Wu's comments might give people the impression he was interfering with the operations of the Judiciary. Dr Wu was unavailable for comment.