Complex sentence: In April 1977, the Hong Kong University Student's Union suggested removal of "anti-right wing" from the action guide of the federation but the standing committee refused to vote; all delegates from the Hong Kong University Students' Union withdrew in protest.
Split into simpler sentences: In April 1977, the Hong Kong University Student's Union suggested removal of "anti-right wing" from the action guide of the federation but the standing committee refused to vote. All delegates from the Hong Kong University Students' Union withdrew in protest.