I am an international student who comes from Macau where people usually don't know where it is. Whenever people don't know where this city is, I'll tell them it's near Hong Kong. It is a very small city and is well known as the little Las Vegas of Asia. Our living environment is surrounded by numerous casinos. I used to not like Macau because there were so many people. There are many visitors from all over, mainly from China, visiting every day. However, when I went to study in the United States, I changed my mind. I think Macau can easily describe me. For example, it's a small town and I'm a small person compared to Americans. People who don't like casinos will wonder why I have to go visit Macau, there's nothing to do. That’s where I took an English writing course. We were divided into groups of 4 people at random. In my group we have two Vietnamese American girls, one white and one Chinese, that's me. At first, I was afraid the situation would happen again. I knew I had already been prejudiced against people from previous experiences. Fortunately, their attitude made me feel comfortable and respectful, and we shared many experiences. We had to prepare a presentation for the class. We perfectly defined the idea of ​​“superadditivity” when our result was 1+1=3, by Scott E. Page from “Making the Difference: Applying a Logic of Diversity”. I'm not good at English, however, I have different ideas. I told them one of the Vietnamese American girls would help me make a full version of it. The other Vietnamese American is good at creating PowerPoints, so she made that and it looked great. The white man, capable of giving an interesting speech, was responsible for presenting our ideas. In the work process, we were very happy and in harmony. It was the first time in the United States, I had the impression of working in a group. If we weren't together, the presentation might not be as perfect. It was a valuable experience in my life that taught me how to work with others who do not have the same cultures, backgrounds and knowledge. I also learned that while my abilities are important, the power of the individual is important. After this class, I took another class that also required doing group work. We were 5 people, an American, an American, a Vietnamese and two Chinese, including me. The American rarely showed up in class. However, when he came, the American woman spoke to him happily. When we had group discussions, she would just listen and agree with what he said. When we three Asians tried to express our point of view, she would just nod her head and never think about our opinion. It was so obvious to notice because when it was our turn to tell the class what we found, she only used her ideas every time. The most relevant reason that can explain her attitude was that she was biased and liked to work with someone who had a similar background to her, which is favoritism within the group. On the other hand, I had benefited from favoritism within the group. I was going to a Chinese restaurant with my friend. The owner is also Chinese and she gives us discounts during some Chinese festivals. It was so happy to see people in the United States caring about us. In-group favoritism can be helpful but also harmful. After the class discussion and my experience, I agree that I should avoid in-group favoritism in my future life or