Date and time 23 September 2026 10:00-17:00 Location PB 106 Organiser The Student Union of Humanities and Social Sciences (HSSA) Places available 200 places Registration Registration is not required. Scan or click on the QRCode to register if this event requires registration About the event It consists of two small activities. Students can scan the QR code to follow the organization's official account and complete the related activities to receive prizes. I. International Cold Knowledge Quiz Participants need to complete a fun knowledge quiz. The questions cover the definitions and distinctions of international communication-related terms, matching the authors of classic foreign media works, common knowledge about mainstream social platforms overseas, the identification of national flag names, and English slang, etc. Passing the quiz requires answering two questions correctly and receiving a souvenir as a reward. II. Prisoner's Dilemma The participating students are divided into two groups (A and B). The scenario is as follows: Two people had an accident and the police separated them for questioning. Each person can choose to report the other or not. If both report the other, each will receive one souvenir. If both do not report the other, each will receive two souvenirs. If A reports B but B does not report A, A will receive three souvenirs and B will receive one.