Recently, a Chinese student who studied abroad delivered a speech at the graduate ceremony. Her speech soon became the hot issue, because she criticized Chinese air pollution, which was a great threat to her health. Though her speech had exaggerated the problem, it is true that China has faced many pollution problems. The haze in Beijing is famous around the world, which is the punishment for human to ruin the environment. It needs time to fix the problem, but there is no need to deny our country. Even for the developed countries, they h**e once faced such problem before. We can do something in the daily life to protect it, such as do not throw away the rubbish.