I have booked to stay in day inn forbidden city. How do I get there from the Beijing capital airport?

By Express Train: taking the train to Dongzhimen, where transfer to local subway line 2 to Jianguomen. Then transfer to subway line 1 to Wangfujing Station, which is around 600m from your hotel.

By airport shuttle bus and taxi: take shuttle bus line 3 to BJ Railway Station. Then take a taxi to your hotel within 10min.