背景视频1：鲁迅生平（一） 

来源: 节选自以下三个视频

http://www.iqiyi.com/jilupian/20130409/2d9e2230c3af0006.html

http://www.iqiyi.com/jilupian/20130409/2d9e2230c3af0006.html#curid=451637_91885eed6939491fb8b76ea2153553b1

http://www.iqiyi.com/jilupian/20130409/2d9e2230c3af0006.html#curid=451656_ab180650fe6f403dbf736e0327dc154f

背景视频2：鲁迅生平二 

来源: 节选自以下三个视频

http://www.iqiyi.com/jilupian/20130409/2d9e2230c3af0006.html

http://www.iqiyi.com/jilupian/20130409/2d9e2230c3af0006.html#curid=451637_91885eed6939491fb8b76ea2153553b1

http://www.iqiyi.com/jilupian/20130409/2d9e2230c3af0006.html#curid=451656_ab180650fe6f403dbf736e0327dc154f

背景视频3：五四运动

来源: "https://youtu.be/Y_hWWC8hr0E"