In chapter 41 of the Romance of the Three Kingdoms, Liu Bei flees from Cao Cao with more than a hundred thousand soldiers and civilians. They cover little more than ten li a day. His generals urge him to leave the people behind. Liu Bei weeps: “Whoever undertakes great things must take people as the root. Now the people have come to me. How could I abandon them?” (举大事者必以人为本。今人归我,奈何弃之?)
Soon after, Zhao Yun carries Liu Bei’s infant son out of the battle. When he hands the child over, Liu Bei throws him to the ground. A common saying gives the scene its usual reading: he did it to buy people’s hearts.