If I am an inventor, I would like to invent a robot called Nerf Gun Book Robot.

This robot can move around the bookshelf smoothly, take a book that someone needs and use a Nerf Gun to shoot down a target.

I want to invent this robot because if some people are too short to get a book easily, they will need this robot to help them.

This robot is so easy to control. Just take your ipad or iphone to download a control app, choose the book you want, press a button, the book will be shot to our hand.

This Nerf Gun Book Robot will be launched in 2050. It will first be sold in Hong Kong and Tokyo because these two cities are my favourite ones in the world.