Breeze tree is a product designed for open train platform, it provides a sustainable solution for passengers feels bored when waiting trian and the unberable weather condition. This product is deisged as a self-sufficient energy system. Passengers can walk or jump on the piezoelectric-made pad on the ground to make the fans light up, meanwhill, it collect the energy from passenger's steps.When the switch of fan is on, the cold/hot wind will come out,at the same time the wind chimes sound can be heard.It helps keep the waiting space orderly by attracting passengers gather around.