Fu Chen remonstrated: "This is not permissible. There is a saying by the ancients: ‘Brothers may quarrel with each other, but they can still keep those who want to bully them at a distance of a hundred li.’ The Duke of Zhou said in a poem: ‘Brothers quarrel within the walls of their home; outside they resist bullying by others.’ Thus, a quarrel between brothers is an internal dispute, and such quarrel will not weaken their family bond." (Discourses on Governance of the States)