>Otherwise, nobody would even keep their cars on roads.
that's exactly what happens when state power vanishes. It's always fun to recall historical events, in 1977 when New York lost power for 24 hours (https://en.wikipedia.org/wiki/New_York_City_blackout_of_1977...)
In those 24 hours 1600 stores were looted, 1000 fires laid, firefights broke out, the mafia in little Italy hat to defend the quarter with barricades and arms, robbers were being robbed by other robbers, almost 4k people were arrested to the point where they had to be put into basements and gyms. That's one day without order. The bad experiences don't stand out because they're uncommon, they stand out because we all instinctively know we're one bad week away from eating each other. Which by the way given that this is a thread about China, happened in the living memory of some people: https://en.wikipedia.org/wiki/Guangxi_Massacre
"In the massacre, methods of slaughter included "beheading, beating, live burial, stoning, drowning, boiling, group slaughters, disemboweling, digging out hearts, livers, genitals, slicing off flesh, blowing up with dynamite, and more".[1][8] In one case, according to official records, a person had dynamite bound to the back and was blown up into pieces by other people (so called "heavenly maiden scattering flowers", 天女散花)—just for fun"