The Yip man wing chun system, has many unique inovations that can be traced back directly to Yip Man. Some inovations and changes have been from his students. Yip Man knew he was the first to teach Wing Chun openly to the public. As such many of the core basic fundamentals were placed in the most advanced parts of his system. Out of all Wing Chun Lineages, The Yip man system has the most variation as well as the most practitioners, as well as being the most simplified and streamlined.

System :

• Siu Lim Tao (Little Idea Form)- (romanized Siu Nim Tao)
• Chum Kiu (Finding the bridge form)
• Biu Tze (Thrusting fingers)
• Muk Yan Jong (Wooden man post)
• Bart Jam Dao (Character 8 slashing swords)
• Luk Dim Poon Kwam (6.5 pole method)

If you want to read more about his life : http://en.wikipedia.org/wiki/Yip_Man

Source : www.wingchunpedia.org/