China under the Lesser Mao's regime in Fear and Loathing is Mao's China if the Cultural Revolution never stopped, plus North Korean-style paranoia and cult of personality, plus Khmer Rouge genocidal insanity, plus some homegrown crazy.
Essentially, in 1973 Mao's nephew becomes the real power behind his uncle and he goes completely bananas. He expels all foreigners and closes China to the outer world and starts combining regular maoist craziness with revived imperial chinese stuff. An indecisive war with the USSR in 1974-1975, together with american victory in Vietnam only makes his paranoia worse. He literally plans to conquer the world, or at least Eurasia, by making use of China's population, so rather than enacting the One Child policy he does the opposite and starts forcing the population to breed as often as possible so that in the future he can overwhelm Siberia, southern Asia, Russia and eventually Europe thanks to sheer numbers. To feed all those extra people without relying in the outer world, he starts mass-producing meth and heroin, both to export it and weaken the West; and to issue it in rations, turning chinese people into junkies. Then he starts getting addicted to his stuff, so by 1977 we have a power-mad, paranoid, genocidal madman who has absolute control over a huge country completely sealed off to the outer world and who lives in a constant meth and heroin binge. At some point, everyone holding any sort of responsability post starts being purged as a routine measure, regardless of whether they're actually even suspected of anything, turning Khmer Rouge-style of omnicidal mania into a regular workplace policy. A military uprising in a city is ended by using nuclear weapons: after that, a popular method of execution consist of having people eat radioactive dirt from the nuked city and have them exposed publicly until they die of radioactive poisoning.
When it ends in 1981, after the americans and the soviets team up to nuke his NBC program and pretty much every single one of China's neighbours invades at once, around two hundred million people have died. It's bad enough that, IIRC, a world council of Rabbis formally declares it to be a Second Holocaust.