After Liu Xiang's death, his son Liu Xin was ordered by Emperor Ai Di to carry on where his father left off. Father and son became known as the founding fathers of Chinese bibliography.
劉向死後，在位只有六年的漢哀帝，命劉向兒子劉歆繼續其父工作，劉氏父子成為中國目錄學始祖。