Notes from Shanghai’s underground

It is a steamy summer night in Shanghai, the kind when baked apartment water pipes cannot deliver cold showers and when, stepping outside, your eyes fog and sting with the heat. Ma Haiping, undisputed king of the Shanghai techno scene, has the right idea. He is perched outside a dive bar in the city’s tree-lined former French Concession, with a frosty bottle of Corona beer in front of him and luxurious cool air conditioning streaming from an open window behind. It’s about 11pm, an hour before he is due to…