《汉书·传·张周赵任申屠传》
这一年，戚姬之子如意为赵王，才十岁，高祖担心自己死后他不能自保。
是岁，戚姬子如意为赵王，年十岁，高祖忧万岁之后不全也。
In that year, Empress Qi's son Ruyi became the King of Zhao. He was only ten years old. The emperor was worried that he could not protect himself after his death.