Since 1980s, YU Youhan started his quest for abstract painting. The series Circle made him into avant-garde at that time. Later, however, the artist transferred his interest into political pop and the abstract creation was consequently suspended. 20 years after that period, YU recommenced abstract series including new works displayed in exhibition today. The expression by broken lines unveiled a mixture of the artist’s personal experience, social observation and even philosophical thought on the entire universe. Light as feather, nevertheless, it continued with a weighty and complex issue in a familiar and yet brand-new way.