Our cities are busy and crowded. Sometimes they are not smart enough. As a teenager living in Dongguan, Guangdong, 13-year-old Wu Yuhang 1 this is a problem.
"Crossing the streets can be 2 . Drivers can't see traffic lights (交通灯) 3 their cars are behind a bus. Some careless people can't 4 their eyes off their phones. I once saw a big board fall 5 in a big wind and cut a tree in half. That was terrible," said Wu. "I'm trying to find ‘smart' ways to solve these 6 ."
To stop drivers from playing with their phones, Wu created a signal-blocking device (信号屏蔽装置) and put it at the crossing. He also 7 an assistant system (辅助系统) for traffic lights. Now it is much 8 for drivers to see traffic lights.
Wu has a big plan for his future—to be 9 engineer. "China still has a long way to go in computer science. And I will try 10 best to make our cities smarter."
