Once when I was Primary 3, I borrowed a book from the school library. It’s called “Captain Underpants And Then Invasion Of The Incredibly Naughty Cafeteria Ladies From Outer Space” (And The Subsequent Assault Of The Equally Evil Lunchroom Zombie Nerds).

In the book, a giant UFO crashed into a school on Earth. Three octopuses’ slime-like creatures from other planets squished out the UFO like octopus. They slid around the school. They came across a sign that said “Today's Lunch: Lizard poop and cafeteria lady’s hyper mega dupa farts”. On Earth, it means some disgusting pee-pee poo-poo. But on the alien’s planet, it means a super ultra-juicy Big Mac, super fresh potato fries and a box of low-fat milk.

The aliens put on some makeup and pretended to be the cafeteria lady and stole the food. When they took off their makeup and were about to leave, the science room door broke and an army of zombie nerds rushed out of the room. The aliens had to run away far away and plug their phones or devices into the block. First, it would send Wi-Fi to their phones to make sure they can get help as soon as possible. Then, it charges their phones back to 100% to avoid battery depletion for a long time. Finally, it would go into emergency mode and automatically send a signal to ask for help. But warning, do not use this gadget underwater. First, it cannot get oxygen easily underwater, so it won’t work no matter how hard you try. Second, the block cannot survive underwater pressure so it would break and shatter into pieces. Finally, there are many holes in the block, so if the water goes in and touches the core, it explodes and it could be dangerous.

It could help many people to get out of trouble when they get lost in far places. I hope this invention will come to life.