It is shown in the chart that significant changes occurred concerning the express delivery volume in China between 2018 and 2020. Specifically, the number of overall express deliveries was 51 billion in 2018 , and it rose to 83 billion in 2020. As to the number of rural express deliveries ,it displayed a similar trend, varying from 12 billion to 30 billion during the same period.
The phenomenon reflected in the chart stems from a host of factors; in my view ,the following three are worth discussing. Firstly, economic advancement has ,to some extent, led to the trend , with better living standards, a number of people choose to buy products online instead of physical stores. thereby(从而) boosting the express industry. Secondly, advancement of science plays a crucial role. Thanks to convenience brought about by technological breakthroughs in the express industry, a large number of people opt to shop online. Thirdly, the phenomenon has a connection with the shift to people's attitudes, according to the findings from large-scale studies, an increasing number of people choose to buy products online. A typical example is my friend Li Lei, who shop online at least once a week.
To some up, what is inflected(反应) in the chart does not occur randomly. I firmly believe that trend will persist, influencing (影响) both the individuals and the world society in the long run.