雅思口语P2 Describe a happy experience you had before (文字版）

A couple of years ago when I had the chance to start my own business on campus, I will say that was a quite happy experience that I have ever had. You know, it was not allowed to sell any products on campus according to the rules of universities, but I liked to make the change of such trend. At that time, the online shopping, like the Tao-bao or eBay for example, was not quite popular, I found that freshmen planned to buy the used books from senior students, as young students liked to save money in every way they could. I noticed that and got started my own business in the dormitory. I collected hundreds of used materials and reference books then let almost everyone knew I was selling these books. You know, I made efforts on advertising. Like visiting different kinds of dormitories, 100 at a time I might say. Just told them what I was doing then. At the beginning, it was quite tough, cuz not a lot of people trusted me. Things changed since the finals or the term examination came, that was just 4 weeks in advance, students who liked to pass the exam certainly need my help. I can say that I have earned 2000 in a month, it was like a big fortune to me. Then, everything went smoothly and that was my happy experience. That is it.