 On 31 October 2015, Leung's daughter Leung Chai-yan celebrated Halloween at a number of nightclubs and parties in the Lan Kwai Fong area in Central and had a dispute with a taxi driver around 3 am on 1 November 2015.Her mother later arrived to the scene which enraged Leung Chai-yan.As Regina helped her daughter into the taxi, the latter was captured slapping Regina in the face twice, and her daughter refused to enter the vehicle.