Who says a white coat is only for the lab? Field epidemiologist Jiang Yan wields odds ratios in one hand and search warrants in the other. Starting with a face-slapping takedown of a wellness influencer, he follows the trail all the way to the end. An underground lab in Dongguan, an elite banquet in Shenzhen, a transnational criminal network: using epidemiological methods, he tears up the entire criminal operation by its roots!
