《吕氏春秋·览·恃君览》
宋国处在三个拥有万辆兵车的大国之间，子罕当相的时候，一直没有受到侵犯，四方边境都很安宁，子罕辅佐平公、元公、最公一直到身终，这大概正是因为他既仁慈又节俭吧！
宋在三大万乘之间，子罕之时，无所相侵，边境四益，相平公、元公、景公以终其身，其唯仁且节与？
Song is located between three powerful countries with tens of thousands of chariots. Since Zixan became the prime minister, Song has not been invaded, and the four borders have been stable. Zixan assisted Pinggong, Yuan Gong, and Zhuigong until his death. This might be because he was both benevolent and frugal!