Bob Ross brought joy to millions as the world's most famous art instructor. But a battle for his business empire cast a shadow over his happy trees.。沙耆被誉为“中国的梵高”，纪录片《天纵神笔》正是反映了这位精神疾病画家的跌宕人生命运和辉煌的艺术成就。该片史料充实，权威评价，是一部罕见的人物纪录片。。
