More About Qi Gong
Below are just a few of the many web sites that provide information about Qi Gong, it's history, types, and purposes.

Qi Gong - From Wikipedia
A well-rounded website describing the who, where, what and why of Qi Gong

Qigong Institute
In their own words, this institute is a "not-for-profit organization dedicated to promoting Qigong through research and education and have worked hard since 1983 to be a clearinghouse for related news and scientific facts to aid researchers, writers, practitioners, and members..."

It's a very informative website about the subject and has an interesting introductory video about the history and benefits of Qi Gong.

Ling Gui International Healing Qi Gong School
This is the web site of my teacher, Master Liu He, and her brother, Liu Dong. It provides information about their Qi Gong school. [Note: They run workshops out of my building, The Moving Space, once a month.