Recently, the Center for International Studies(CIS) held its first economic festival in the school library square. The students from CIS have become the "owner" of one booth after another, and strived to sell the products they have made or selected by themselves. This is also a charity event. All profits will go to raise the welfare of migrant children. The enthusiasm for the economic festival was high. The students actively invested and dared to innovate. All the products were sold out within the time frame. The most gratifying thing in the growth and transformation seen in students. They make full use of their knowledge and play their own advantages, moving from consumers to operators. Even the normally silent students are brave to try, from behind the scenes to the front role, introducing products to customers. They not only improve their own abilities but also bring a rich and interesting after-school activities to the majority of teachers and students, enriching the campus cultural life.