The bar chart illustrates the change in Chinese residents' life expectancy over the past 30 years. The average life span of Chinese people was about 69 years old in 1980, and it slightly decreased in the next decade yet increased again in following decades, reaching almost 75 years old in 2010.
That the Chinese are living longer and longer has some advantages. The old can enjoy the happiness of a family reunion with their children, grand children, and even great grand children. On the other hand, this trend has brought about problems. The Chinese population has been growing so fast that overpopulation has become one of the most urgent crises facing the Chinese government. As people are living longer, the proportion of senior citizens in China is also increasing. It is expected that the elderly in China will account for 25% of the whole country's population in 2030.
In my opinion, scientists should keep improving medical care to lengthen people's life expectancy. Meanwhile, governments should enhance social security against the ever-growing aging population.
