As is clearly demonstrated in the line chart, there is a series of figures showing the number of senior citizens in China.

It can be seen that the number of senior citizens increased steadily from 2010 to 2050, starting from 140 million (10%) in 2010, undergoing 200 million (14%)in 2015, and eventually ending up with 400 million (25%) in 2050.

So what are the reasons behind the phenomenon mirrored by the chart?

First and foremost, the impact of the one child policy which was implemented for several decades to effectively control the population of China is emerging.

What’s more, with the living standard improving, people tend to live a healthy life, which enables them to achieve a much longer life expectancy.

Last but not least, the young couples become more reluctant to have a baby because their shoulders are overburdened due to the unprecedented high level of house price and living expenses.

From what has been analyzed above, we can easily come to the conclusion that it is urgent for the government to make some incentive policies to relieve the phenomenon of aging population.

Only in this way, can we have a bright future to look forward to.

参考译文

正如在折线图中清楚地表明的那样，有一系列数字显示了中国的老年人数量。

可以看出，从2010年到2050年，老年人数量稳步增长，从2010年的1.4亿（10％）开始，到2015年将达到2亿（14％），最终在2050年达到4亿（25％）。

那么图表所反映的现象背后的原因是什么？

首先，旨在控制中国人口数量的政策已经实施几十年，且其影响逐渐显现。

更重要的是，随着生活水平的提高，人们往往过着健康的生活，这使他们能够实现更长的寿命。

最后，由于前所未有的高房价和生活费用，年轻夫妇因为他们的肩膀负担过重而变得更加不愿生孩子。

通过以上分析，我们可以很容易地得出结论，政府迫切需要制定一些激励政策来缓解人口老龄化现象。只有这样，我们才能拥有一个光明的未来。