抗戰勝利後，大批漢奸隱匿澳門，以避戰時通敵叛國罪嫌。隨着張發奎第二方面軍開赴廣東，國民政府在澳肅奸工作亦隨即展開。澳門肅奸工作開局頗為混亂，澳葡政府對待肅奸甚為消極，在重要“經濟漢奸”的引渡問題上，廣東當局屢次與澳葡政府交涉引渡被指為“經濟漢奸”的高可寧，但澳葡政府拒不引渡。澳葡政府對高可寧的保護，實質上代表着其對傅德蔭、鍾子光、梁基浩等被指為重要“經濟漢奸”的華商的態度。面對廣東高等法院的指控，高可寧提請抗告，幾經周折，高氏終獲“清白”。澳門肅奸風波亦在多方博弈下草草收場。

Large quantities of hanjian (Chinese nationals working for the Japanese authorities) fled to Macau after the victory of the anti-Japanese war in order to avoid charges of treason. The arrival of the second troop led by Zhang Fakui to Guangdong marked the launch of the campaign to prosecute hanjian in Macau. The campaign did not begin smoothly, with the Portuguese-Macau authorities being negative on this matter. Repeated negotiations over handing over Ko Ho Ning, who was regarded by the Chinese authorities as “economic hanjian” bore to no avail. The protection of Ko by the Portuguese-Macau authorities symbolised its basic attitude over Chinese businessmen such as Fu Tam Yan, Chuen Chi Kwon and Leung Kei Ho. Ko protested the charges made by the Canton High Court, and was finally “cleared”. The hanjian prosecution campaign concluded without concrete results in the end.