Zairil Khir Johari @ Christopher Ross Lim is a MUSLIM, but never a Malay. So, to say that he is 100% representing the Malay is an absolutely biggest mistake.
He is the STEPSON of Tan Sri Mohamed Khir Johari, UMNO's veteran leader and the member of first cabinet under the leadership of Tunku Abdul Rahman Putra Al Haj.
Zairil Khir Johari's biological mother, Puan Sri Christine Lim; who was married as second wife to Tan Sri Mohamed Khir Johari after the depart of his first wife, Puan Sri Kalsom Abdul Rahman on 20 September 1994.
Both of them were married in February 1996. At that time, Christine Lim is a widow with 2 children from the previous marriage with a Chinese and Zairil was already 13 years old. It is clear that Zairil @ Christopher Ross Lim is a 100% Chinese descendent.
According to Wikipedia, Zairil Khir Johari (Lim Guan Eng's Political Secretary) has been refer to as STEPSON of Mohamed Khir Johari.
Zairil is the son of Christine Lim with another Chinese man before embracing Muslim. DAP is using him as a GREAT WEAPON to attract Malays in supporting their agendas, according to RBF.
Ex-DAP Deputy President, Tunku Aziz claimed that Zairil is not a Malay since both of his biological parents are Chinese, in The New Straits Times.