Among other things, Eastern Lightning believes that the end of the world is super nigh. This wouldn't necessarily be a problem, except that if you don't agree with them, they will beat the crap out of you until you do. While most religions send out missionaries with pamphlets, Eastern Lightning offers potential converts presents like smartphones. If the ability to play Pokemon Go AND make phone calls still isn't enough to convince them, the church will straight-up kidnap people and torture them, and in some cases kill them. They have also kidnapped leaders of rival churches -- up to 33 in 2002 alone.
The Chinese government, which isn't big on religion in general, hates Eastern Lightning in particular. It included them on a list of 14 religions that were outright banned, and in 2012 arrested over 1,000 of the estimated 700,000 to 1,000,000 adherents for causing panic and riots with their end-of-the-world talk. To make sure everyone got the point, they also posted notices calling Eastern Lightning "a social cancer and a plague on humankind." Considering one follower beat a woman to death in a McDonald's for not giving him her phone number, and then said it was fine because God told him to, they probably have a point.
China Central Television
It remains unclear which God would tell you to go to McDonald's.