english: In 1989, when he was 20 years old, as a junior university student, he participated in the Beijing Tiananmen democratic movement, demanding political reform to stop corruption.
non_english: Nel 1989, 20enne studente universitario, Liu ha partecipato al movimento democratico di piazza Tienanmen a Pechino, che chiedeva riforme politiche per fermare la corruzione.