Tang family preserve a system passed down from famed bounty hunter Fung Siu Ching. Tang family elde Tang Suen learned from Fung, during the time Fung lived in H.K. Tang Suen learned along side the Dong brothers. He passed his art to his son Tang Yik (鄧奕), who fortunatly passed the art down to several students and family members, includin Tang Chung Pak. Tang family is famous for th Luk Dim Poon Kwam method.

System :

• Sap Yat Kuen or Wing Chun Kuen
• Muk Yan Jong
• Seung Kung Jong Kuen
• Luk Dim Poon Kwam
• Gwun Jong

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

Source : www.wingchunpedia.org