Luoyang city: the starting point of the Silk Roads in Han and Wei Periods 并列题名：Luoyang city: the starting point of the Silk Roads in Han and Wei Periods the starting point of the silk roads in Sui and Tang synasties the starting point of the silk roads in Xihan dynasty 隋唐长安：隋唐时代丝绸之路起点：the starting point of the Silk Roads in Sui and Tang Dynasties the starting point of the Silk Roads in Sui and Tang Dynasties