Circle is the best shape represents the meaning of complete, full, adaptability or perfection. On the poster, there are several circles have different but correlated meaning. Start from light of central circle (emblem of HKBU) dispersing into 7 Graduate Attributes on gray wheel and lastly integrate into another larger golden circle as a whole. More meaningfully, it may represent the process HKBU enlightens the 7 main attributes of graduates from their potential (gray wheel) and more (outer golden circle). And how those attributes universally applicable around world (7 colors represent 7 continents).