greetings, i inetend to travel to cambodia with my 4 years old son, i was told to exit china and then return in and my son can be a foreigner , having heard about cambodia i would love to experince there and at th same time pay a visit to the chinese embassy, i read i can apply for visa online using the e-visa please how authentic is this, thanks. n.b. i reside in china and i am a foreign expert holder. thanks again