Shang Qingyan ordered Zhu Ying to cripple Cen Jiashu's right hand as reciprocity for Yu Ange's help and to punish him for slandering Yu Ange's sister. Imperial Physician Liu deliberately administered acupuncture that damaged Cen Jiashu's right arm, making it difficult for him to hold a brush and hindering his official career as a newly appointed Tanhua.