This is a mountain which intertwines with water and green as a new layer here. It is a giant play equipment that creates more open space for people. Moreover, it is a modular planting purification system. It introduces the water from the canal. The dirty water will be filtered, purified and transformed into a waterfall bringing a coolness to the plaza. It brings a coolness here. Additionally, this mountain is an ecological stepping stone, allowing birds and animals to rely on it and live on the river bank. It can also alleviate the eutrophication in canal.