青島戰役
In retaliation for the Chinese government's weak response to the Treaty of Versailles, students protested against the government's decision to allow Japan to retain territories in Shandong that had been surrendered by Germany after the Siege of Tsingtao in 1914. The demonstrations sparked nation-wide protests and spurred an upsurge in Chinese nationalism, a shift towards political mobilization, a shift away from cultural activities, a move towards a populist base and a move away from traditional intellectual and political elites.