why facebook is not allowed in china?解决思路

why facebook is not allowed in china?
Someone asked me "Do you have facebook?" 
I said "facebook is not allowed in china"
She said"why?" 
I said "I dont know" 
she thouht for a minute,then she said " a ha,i know ,because there are so many people in China.If chinese have facebook the server will be down."


[解决办法]
难道他的server 会有这差的
想说中国政治 怕被禁 还是不说了
[解决办法]
gcd
[解决办法]