In the early 1970s, in response to the Diao-yu-tai dispute, student movement erupted on the NTU campus, which had remained quiet since the bloody crackdown in the early 1950s in Taiwan. Following the Denfending Diao-yu-tai Movement, subsequent causes espoused by the students included demanding students’ democratic rights, such as free speech, popular ballots to elect the leader of the student union, to do social services 'among the people”, etc. Even the issue of replacing the old-guard national legislators had been raised. All these democratic struggles were diverted when a debate broke out between the left- and right-wing students on the question of nationalism, and then came to an abrupt end when the government eventually suppressed the activities of the left-wing students. The government subsequently purged the Philosophy Department of the NTU to rid of any remnant of liberal influence of Yin Hai-Guang. This report, written by a participant, also attempts a contemporary interpretation of the thought currents then.