Stims aren’t for the youngs anymore:
Recreational users are bingeing on ketamine, cocaine and methamphetamine to keep them playing into the early hours. “The drug-taking mostly occurs among groups in card rooms, a place popular among the elderly where they can get together and play cards. The addicts are often friends who have known each other for years,” he told China Daily. The newspaper said many took cocaine and other stimulants during card-playing and mahjong sessions that often lasted all night. The games frequently involve gambling, which is illegal on the mainland.