The Ducksters website is an educational site especially for kids and is a great source of introductory information for a topic. You can also opt to have the page read aloud to you, and do a quick quiz to check your understanding.
The Han Dynasty - China's First Golden Age 2012. Online video, September 18 2012. Duration: 3 mins.
Garner It 2018. The Han Dynasty. Online video, 2 August 2018. Duration: 5 mins.