进博会徽章成为“小叶子”的热门产品 - 2021年11月10日

Cao Long, a 21-year-old student from Sanda College, is one of the most popular young volunteers working at the China International Import Expo. He has about 40 badges hanging around his neck, and many of his peers want to exchange with him.

This week, Cao got a precious badge from another volunteer, which he exchanged for three of his own.

During the first CIIE in 2018, badges were designed for identifying and encouraging team leaders of volunteers, according to the Youth League Shanghai. But badges gradually became cool with volunteers, and badge trading became very popular among them.