Seeing Tang Yu's neither humble nor overbearing appearance, Emperor Tang was very pleased. Before leaving the imperial study, Tang Yu specially borrowed Yuan Hongjian, the sword that Tang Emperor carried with him. After Tang Yu left, the eunuch Zhao Gao came to Tang Yu.Beside the emperor, he looked surprised and said: 'Where Yuan Hong passed by was like His Majesty's presence, why did His Royal Highness borrow His Majesty's saber? Just now I asked Tang Yu, what is the mission of being a prince?How to answer? Tang Huang said with deep eyes...