I will reach Beijing at 1am on 21 May. Any train or airport bus to Novotel Hotel Xinqiao?

Well, according to your arrival time, you need to take airport shuttle bus Xidan Line, and get off at Main Railway Station first. The ticket fare is CNY 24 per person. The operating hours of this line are from 24:00 to the last domestic flight arrival. After arriving, take a taxi to your hotel directly. The cab fare is about CNY 13 at that time.