Shallow grass line Metro to escort boarding and disembarking, the exit sign said that the clear sky tower, take the elevator upstairs to the service building opposite the tower, inside to buy things, eat most. To the top, there are science and technology exhibitions, robots from Japan. No tickets. The staff are very enthusiastic about the demonstration. On the first floor of this building, there is a very big supermarket with thorns, seafood and staple food. It's great and tax-free.