The head of Lingnan University said on Wednesday it is okay for students to discuss Hong Kong independence, even though the university is against the idea.
Leonard Cheng said students can learn from discussions and the university's campus is a place to acquire knowledge.
Pro-independence posters had appeared in all eight public universities when the new academic year started last week.
Cheng said officials from the public universities had discussed the issue but had yet to arrive at a collective stance.
Lingnan students had earlier called the police when a poster on their "democracy wall" was torn down. The poster read "people who don't support independence should also protect free speech".
Cheng said the wall is managed by the university's student union and the institution had nothing to do with the poster being torn down.