The South China Morning Post reported that Hong Kong Monetary Authority Chief Executive Joseph Yam Chi-kwong was asked to lobby mainland authorities to grant Bank of East Asia (BEA) and other Hong Kong companies listing rights on mainland exchanges using a (China) depository receipts scheme in the tradition of non US companies listing and trading in the United States market. Yam is scheduled to lead a bankers� delegation to Shanghai and Beijing later this month. BEA chairman and chief executive David Li Kwok-po, who asked Mr Yam to intervene after his own lobbying efforts repeatedly failed, said he would on the same trip.