Stay in a hotel in Beijing at midnight.

If so, I suggest:

I think it's more convenient and faster to take the airport than the bus, 25 yuan.

Get off at Dongzhimen, transfer to Line 2 and get off at Qianmen.

When you walk out of Qianmen Station, you can stroll around Tiananmen Square.

Then take a taxi to Beihai Park, which is very close. 10 yuan. Beihai is the song "Let's Row".

When you climb the White Pagoda in Beihai Park, you can see the Forbidden City and Zhongnanhai. Go out from the north gate of the park, and you can visit Houhai Bar Area and Yandai Xiejie. Out of the pipe, you can reach the Drum Tower and the Bell Tower. Just take a look. Don't go up there.

Then go to the Water Cube and the Bird's Nest. Take a taxi if you have money. If you are not rich, take a taxi to the subway first. 10 yuan. 10 subway to the Bird's Nest. )

Visit and then check into the hotel.

This is your first time here. I think this line is better.

After a cursory look, time should be enough.