By the way - another serious problem I see along the same lines - law enforcement here isn't really good or prepared to deal with the bad guys.
This is my one main issue with China-lack of the rule of law. The police really don't give a shit, especially when it comes to foreigners. That guy who went mad with the sword would have been shot or tazered in the USA, no question, yet he was allowed to hang around there and NOONE, bystanders included, did ANYTHING.

Yep, as you no doubt know by this time, a Frenchman and his newly-wed Chinese wife were so unlucky to encounter the swordsman. She died in hospital as a result of the attack. They were going to emigrate to France within a month. The assailant accused the foreign male of being American. He probably assumed the Chinese woman was an American too. What a tragedy! And it was allowed to take place in Beijing! There, a swordsman can circulate freely without being apprehended for being in possession of a lethal weapon!

Let's say you are an FT shopping with your TA in a Chinese county. It's possible you will encounter a crazy Chinese guy like the swordsman there. It doesn't bear thinking about what could transpire!

There are mentally ill Chinese people who should be in lunatic asylums circulating freely within the society. They can kill a person with or without a sword!