Sun Chuanfang
In 1924, one of his students held an exhibition in Nanchang featuring nude art. This greatly disturbed Sun Chuanfang, who issued a secret warrant for Liu's arrest and tried to close down his school. However his efforts were futile, since the school was based in the French area of Shanghai, where Sun had no authority. Liu still had to pay a fine to appease the warlord. The event made the concept of nude modeling public knowledge in China.