Pew Research estimates the percentage of China's population which are Christian to be only 5.0% of the total population. This is the aggregate and includes Protestants, Catholics, and Christian cults:
http://www.pewforum.org/uploadedFil...filiation/Christian/ChristianityAppendixC.pdf
Despite making provision for freedom of religion in the Chinese Constitution (article 36 added in 1978), China has never honored it.
So it should come as no surprise that in 2012, China's government launched a new three-phase campaign to wipe out unregistered house churches which they view as a hostile group of dissenters and force them to join the official Three-Self Patriotic Movement (TSPM) church system controlled by China's government and whose "theology" entails a great deal of actual heresy no genuine Christian could ever adhere to.
In the first phase, from January 2012 to June 2012, the State Administration for Religious Affairs (SARA) sent out a large number of government spies and secretly investigated house churches across the country and created files on them.
This was followed by a wave of crackdowns, which is ongoing right now, as part of the second phase. The vast majority of Christians have resisted and refused to join the government's authorized "Christian" church.
With little exception, the mainstream liberal media is refusing to cover these blatant human rights violations occurring in China.
Phase three is expected to begin from 2015 through to 2025 and the Chinese government intends to put Christians under their boot using government force much like Mao did in 1958.
Persecution has come to China's Christians and severe persecution is coming shortly.
The metaphysical worldview of Marxism is state atheism and every Marxist country without exception has engaged in sweeping persecution of religious people on a regular basis as a result. It's impossible to have true freedom of religion in a nation built on the principles of state atheism.
We'll probably see an increase in Christian refugees from China but the vast majority will continue to be non-Christian with most loyal to China.
On a positive note, many in China are Christian.
Jesus did say the nations would become obedient and discipled to him.
I'm fine if America becomes filled with discipled obedient Chinese people riding the bikes in that picture.