China has arrested 30 pastors from the Zion Church network, one of the country’s largest unregistered Christian groups. Their crime: preaching without Communist Party approval. Among those detained is Pastor Ezra Jin Mingri, charged with "illegal use of information networks." Rights groups say this is China’s harshest religious crackdown in over four decades, aimed at enforcing state control over faith. As worship goes underground, international criticism grows louder. Is China criminalizing religion to secure Party loyalty?