I am Belgian traveling to Phnom Penh, Cambodja with a stop in Guangzhou

Hi,
I am Belgian traveling from Brussels, via Amsterdam and Guangzhou to Phnom Penh? I will not be in the Guangzhou airport longer than 24 hours. I have a valid passport and all the bookings for the international flights. I have no Visa for Cambodja yet, This will be bought on arrival in Phnom Penh.