《战国策·秦五·濮阳人吕不韦贾于邯郸》
吕不韦献策说： 大王年事已高，华阳夫人却无子嗣，有资格继承王位的子?
不韦曰： 王年高矣，王后无子，子傒有承国之业，士仓又辅之。
Lü Buwei suggested: The king is old, but Queen Hua Yang has no children. Which son is qualified to succeed the throne?