Solving puzzles is still difficult, but the staff will remind you from time to time. At first glance, it seems that you can't guess, so I'll tell you the answer. It's annoying, so can't people think more?
What's even more fucked up is that you are not allowed to take pictures. The staff will take a picture for you for 50 yuan. Black!
Fares are on weekdays 120, saturdays and sundays 150, and holidays 180.
By the way, after this, you can go to Sanlitun village to see a few meters of starry sky exhibition and a large-scale installation exhibition, free of charge. Very good!