Centuries before the world's oceans became a global trade highway, Chinese seafarers set sail to faraway lands to exchange commodities. Now, Historian Sam Willis retraces the golden era of maritime trade to uncover a legacy that culminated in one of the greatest armadas of all time, and discover parallels between the world then and now.更多《21世纪海上丝路》在线高清播放、21世纪海上丝路高清国语版、21世纪海上丝路免费完整版在线观看高清相关欧美综艺资源，请持续关注放杰视联科!