PRC (China) coopted their population into a false flag drill, using old but relevant CCTV footage (People collapsing face first etc.).
PRC scripted emergency and crackdown video clips nationwide to convey a sense of panic (arrests of people not wearing masks and so forth), and a real lockdown in Wuhan.
Other places such as Beijing and Shanghai, played the game, but just enough to convince analysts and researchers.
This is why China has recovered swiftly compared to occidental countries, and is now back in business.
The biggest false flag drill ever made.