By 2018, official Chinese government statistics said there were 39 million Protestants in China. Scholars estimate that including house church worshipers pushes the real number to at least 80 million — almost 6% of China’s population, on par with Communist Party membership.
Theology for the Common Man - A Time for Revitalisation of the Sikh Heritage
An interesting analysis from decades ago of the challenges that religious faiths face as they attempt to rescue mankind out of the quagmire of sin and superstition. More current than one might anticipate and a topic all faiths should be addressing.