Graduates from Hong Kong University of Science and Technology (HKUST) and the Chinese University of Hong Kong merged on stage this week to put on a high-energy display of hip-hop and breakdancing. The graduates, from the Billy Chan Dance Concept (BCDC) outfit, based in Kowloon, were special guests at HKUST's annual Performance Day, and joined HKUST students (pictured) who danced their way through an hour-long show involving five routines. BCDC Creative Director Raku Lok, 26, said, 'It was great. Many of these students are my pupils.'