安忍无亲

Explanation: Needed peace of mind to do something cruel, so indifferent relatives. 　　Usage: Joint type; as the predicate attribute, object; containing derogatory 　　Source: Pre Hengyu "Zuo implicit public four-year": "Cardiff Zhou Xu resistance soldiers and impatience. Resistance soldiers without the public, impatience no relatives. Deserted, it is difficult economy carry on." 　　Examples: Results of the Shi-~ also, _set_ the edge of the parent in the next Dou Jiande without shirt. ("Reading Chronicle on the Tang Emperor")