"All four corners of the church, including the pulpit, have to install face recognition cameras to monitor all those who are attending their church worship service," Fu insisted.

"And even the tithing and offering is called a foreign religious service now, is criminalized, especially in the house churches. So many house church pastors are arrested just because they set out the offering on tithing, a box in the church."

The charge against those pastors is business fraud. 

Over two years ago, public security police arrested three pastors from the Linfen Covenant Church on these charges. They went on trial in May. 

China Aid reports one pastor was sentenced to nearly two years in prison, and two others received more than three-and-a-half years.  "Simply for having their church with the Sunday school and with the offering box for tithing and offerings in their church," Fu explained.

Fu and King argue that despite Xi Jinping's crackdown, Christianity is growing in China.

While their pastor, Wang Yi, serves a nine-year prison sentence, members of the Early Rain Covenant Church are igniting the fires of revival.

"Last year, they had planted two more churches under the heaviest persecution," said Fu. "So, we have seen many, many house churches experience revival."

King believes the communist government does not understand the impact of persecution on the Christian faith.

"I can never understand how the Marxist leaders don't get this: the more you press down, the more the church spreads. Christians have a long history of dealing with chains and oppression, and nothing stops them. It's such a great story."                                                                     

RELATED: