Make a little invention

Novelty means that you haven't seen a product with the same content or technology before you finish this little invention. In other words, you can't buy the same product in the street shop, and you haven't seen or heard the introduction in books, magazines, radio and TV; The same invention has not been filed with the Patent Office by others and recorded in the patent application documents, nor has it been declared by others to participate in invention-creation competitions at all levels. However, it is also novel if new functions, new methods and new uses are added to other inventions, or several original items are skillfully combined into a new individual to add new functions.

Haokexie

One day, Wei Qiang and his father went to visit a friend's house. As soon as he entered the door, he was stumped: it was impolite for his host's house to be carpeted and not to change his shoes. Change a pair of shoes, your feet stink again. After returning home, Wei Qiang thought: If there is a kind of slippers, you can wear them without taking off your shoes, how wonderful it would be! Later, he was inspired by velcro on his travel shoes: he tied velcro on his slippers, put it on when he pressed it, and pulled it open when he lifted it. Can't you adjust it if you want to be fat and thin? So he found a pair of old slippers, cut off the shoe rims, sewed on nylon buckles, and made "hospitality shoes". This little invention won the third prize in the 4th National Youth Invention Competition.

In fact, Wei Qiang's invention only transplanted other people's inventions to slippers, and only gave slippers new functions and new uses. This invention is also novel.

I can't send pictures by myself.

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