Hello,everybody!My name is Xu Qianyao.Today rd like to talk about"When I am 20".First of all,I hope that I can invent a machine.It can absorb all the garbage on Earth,making Earth cleaner and more beautiful.Second,I hope that I can invent an"arbitrary door",like Doraemon does,so that my mother can go back to Xinjiang anytime.Then she will be excited to visit my grandparents.
