Question: what are the different styles of tai chi?
Answer: Chen style (陳氏) of Chen Wangting (1580–1660)
Yang style (楊氏) of Yang Luchan (1799–1872)
Wu Hao style (武氏) of Wu Yuxiang (1812–1880)
Wu style (吳氏) of Wu Quanyou (1834–1902) and his son Wu Jianquan (1870–1942)