The bar chart above vividly depicts the dramatic changes citizens’ ways of traveling in one city from 1996 to 2016. In 1996, it seemed preferable for people to take a bike and the number was approximately 22,000. However, it plunged to 5,000 in 2006, while the quantities of car-taking and bus-taking topped at 28,000 and 22,000 respectively. In 2016, bike-taking witnesses a sharp return, reaching 17,000. What can account for the changes of numbers in bike-taking? It is thought-provoking. To begin with, people in the past lived under poor circumstances with a relatively low level of earnings. Quite a proportion of people could not afford cars, so they turned to bikes. Moreover, with the advance of society, a rising number of people are rich enough to purchase cars. However, in recent years, to promote environmentally-friendly transport and ease increasingly grid-locked city streets, the authorities appeal to the public to walk, cycle or take public transportation when they go out. As a result, some people “abandon car for bike”. As far as I can see, with the improvement of people’s awareness of environmental protection as well as the release of strict rules and regulations, more citizens will prefer cycling.