"Single's Day", is neither a local nor western festival, but originated in Nanjing universities in the early 1990s. It is one of the representative products of campus fun culture. As students graduate and leave school, the atmosphere of "Single's Day" has gradually spread to society in recent years. Now it has become a special day for young people in Nanjing. Three days before November 11th "Single's Day", yesterday a group of college students around 20 years old performed a flash mob on Guilin Road in Changchun City to welcome the "Single's Day".