绿色的小房子，脚一踩那个东东，房子的顶部就会打开，你可以放很多垃圾之类的到里面去，房子是绿色的很的环保的意思在里面。
译文:
Green House
Step your foot on that prominence of the green house ,and the roof of the house will open. You can put a lot of things like the garbage in it. Green color means environmental protection.