BF, thanks for adding Tai Chi Chuan. :-)
If you can find a Chinese calligraphy image of "Tai Chi", email it to someone here( there's a spot someplace on how to link images on Wikipedia), and it will look nice on the Tai Chi page. I keep a book beside my monitor titled "Tai Chi", by Paul Crompton. The 1st page has the Chinese symbol for Tai Chi, verified by a native of China, who pronounces it "djee". I've always been a New Age person and included Eastern thought in my lifestyle, but this book was the first one purchased that started me on my way seriously. My personal form is a ballet/ tai chi mixture which looks like me dancing slowly and breathing. It is allowed to make your own movements, as long as you know the basics. ~BF
FYI, according to my dictionary, there are 22 Chinese characters pronounced as qi(1), there are 42 pronounced as qi(2), 13 as qi(3) and 19 as qi(4). Removing the tonal notation at least quadrupled the ambiguity. Removing the Unicode character doesn't help at all, you are changing a precise origin of word into 96 possible mappings.
Do you want an encyclopedia with precise info or what?