In the Cangqian Campus of Hangzhou Normal University, rugby field for Asian Games Hangzhou 2022 has been ready for the game. The whole field looks extremely green and fresh in the sunshine. While walking on it, it feels comfortable.

The reporter learned that the secret of the perfect condition of the lawn lies in its strong root system. The ecological 3-layer structure of the base of lawn mainly contains crushed rock and washed river sand. Such a structure has an excellent water permeability so that the roots of grass can breathe freely but be suffocated in the process of growth. The concepts of green and intelligence were applied to the whole renovation process of the lawn, contributing to the evergreen of the lawn.