Recently my colleague Young Zhou returned to the office to fetch something he had left behind. He was scared witless when he saw a light in the dark building, thinking it was a thief with a flashlight.
In my home country of the United States, I swipe for the things that I buy. Debit and credit cards are standard in the US, and before coming here, I was a bonafide member of the cashless society.
As the cultural capital of China, Beijing is simply bubbling with things to do and see. Art, music, sport - if it's a Chinese tradition, it will be practiced here. And if it's a Western trend, there will be a nascent scene.