sentences:  Hao Chujun was said to be studious in his youth; he particularly favored studying the "Book of Han" (the official history of the Western Han Dynasty) and was said to be able to recite it from memory.Hao Chujun passed the imperial examination during the reign of Emperor Gaozu's son and successor Emperor Taizong and impressed the chancellor Gao Shilian in doing so.He thereafter served in the imperial administration as a scribe, and he inherited his father's title as Duke of Zengshan.