Write a story about a street sweeper.

Inspirational story: He jumped from a "scavenger" to a millionaire. In the eyes of ordinary people, it must be the poor who pick up junk. It's almost impossible to be a millionaire by picking up trash. However, someone really did. There is a man in Shenyang who collects rags for a living. His name is Wang Honghuai. One day, he had a whim: he earned a few cents by collecting a can.

If it is sold as a metal material, can it be sold for more money? He cut an empty jar into pieces, put it in the bell cover of a bicycle, melted it into a nail-sized silver-gray metal, and then spent 600 yuan on inspection at the Municipal Institute of Nonferrous Metals. It is found that this is a valuable aluminum-magnesium alloy! At that time, the price of aluminum ingots in the market was between 6,543,800 yuan and 6,543,800 yuan per ton. Each empty can weighs 654.38+08.5g, and 54,000 cans are 654.38+0 tons. In this way, selling molten materials earned six or seven times more money than selling cans directly. He decided to set up a metal recycling plant to recycle cans for smelting.

In order to receive more cans, he raised the recycling price from a few cents to a quarter, and printed the recycling price and the designated purchase point on the card and distributed it to the waste collectors.

The processing plant used empty cans to extract more than 240 tons of aluminum ingots a year, and earned 2.7 million yuan in three years. He jumped from a street sweeper to a millionaire.