Videos on history of Chinese Astronomy and calendar

I would like to share the following series of video, which talks about the history of Chinese astronomy and calendar e.g. 节气，二十八星宿, etc. It is very useful for those interested in date selection and also early form of feng shui:
http://210.34.4.53:88/playvideo.asp?id=11064
http://210.34.4.53:88/playvideo.asp?id=11065
http://210.34.4.53:88/playvideo.asp?id=11066
http://210.34.4.53:88/playvideo.asp?id=11067
http://210.34.4.53:88/playvideo.asp?id=11068

Regards

Alvin Chua