Many weekends during my studies in Changzhou, China, we would go out to have a drink only to realize that our favorite bar was not open that night. In fact, all of the city’s clubs would be closed. The reason? Police decided to crack down on these nightclubs. These would mostly be drug-related crackdowns but other reasons such as prostitution would make the list. They seemed to go in cycles. Once the crackdown happened, things would cool down for a whi …