The term "Liu Jun, Prince Shixing" does not correspond to a widely recognized historical figure in reliable, established encyclopedic sources. There is no verifiable record of an individual by this name holding the title "Prince of Shixing" in authoritative historical texts related to Chinese nobility or imperial lineages, such as those from the Han dynasty or other periods where the Liu family (imperial clan of Han) was prominent.
The name "Liu Jun" is a common Chinese personal name, and "Prince Shixing" could theoretically refer to a princely title derived from a place name, possibly "Shixing," though no known fiefdom or commandery by that name is recorded in standard historical atlases of imperial China.
Given the lack of corroboration in primary or secondary scholarly sources, accurate information is not confirmed. The term may originate from fictional, regional, or non-historical contexts.