The second form is called "Som Bo Gin" ( ). This form is the seed for the training and conditioning for the mobility of infighting theories within the system of Mar Bo, Sun Yang, Lok Gaing, But Fat. This procedure of training will lead to the more advanced infighting forms of Ng Dim Sop But Bin
The third form is called Ng Dim Sop But Bin, which is the five: pressure point hitting system is part of the system of Sop But Dim Kuen (currently only taught to Grandmaster Henry Poo Yee's "Enter the Gate" students)
The fourth form is called Shiem Kuen Tuo Lo (complete Sop But Dim hitting system, with the combining of Sop But Bin Yul Sao Fat).
Infighting training concepts and its theories are part of the advanced curriculum. First it involves learning the forms and techniques and then applying them with a training partner in two-man sets such as " " (Dui Jong) and the infighting conditioning sets of "Mor Kiu" ( ) for final application in free-sparring. These forms and techniques involve the system's "Shiem Kuen Tuo Lo" ( ). In total there are six of these punches or forms. Offensively, there is "Shiem Kuen Sup Bat Dim" ( ) (eighteen-point striking system) while defensively, there is "Sup Bat Bin" ( ) (eighteen changing / borrowing hand techniques).
For the more advanced students, there is the high-level, internal breathing exercise called "Jook Lum Gee Tong Long Pai Mui Far Fut Sao Ting Sing Kung". Furthermore for Grandmaster Yee's "Enter the Gate" students, there is Say Moon Lok Hop Sao, and combined with the Ting Sing Kung will lead Grandmaster Yee's disciples to the advanced long form called "Shiem Kuen 108" ( 108).