This project is located near the waterfront, between the Ruyi River and the CBD of Zhengzhou. The design aims at the contradiction between public and private, office and entertainment. We split the functions into two towers with a huge public sunlight atrium and wrap the two towers and atrium as a whole with diamond-shaped curtain wall. The glass atrium contains all sort of public activities, and sure will impress visitors a lot. Offices and related functions such as stores, canteen, conference center, activity rooms are allocated in two towers which have access control to guarantee privacy. Platforms hanged in the atrium keep communication between two towers.