These titles (except for “Sigung”, “Sifu”, “Simo”, and “Sihing”) are esoteric and are rarely used nowadays.  Some Western gwoons use them but few Chinese bother with them anymore. The titles “master” and “grandmaster” are not used by this gwoon as too many fraudulent practitioners claim them around the world. As there is no uniform yardstick, they have lost all meaning.

Chungsi (Jungsi)	Great master of a style e.g.  Sifus Yuen Kay San; Sum Num; Cheung Bo; Leung Jan; Wong Wah Bo; Dai Fa Mien Kam etc
Dai-gee or Moon-yan	Students, followers
Moon-to	Disciples – specially selected students with a  responsibility for carrying on the style – hand- picked students who meet certain criteria
Sidai	Junior gung fu brother (i.e. one who started after you no matter how old they are)
Sifu	Instructor
Sigung	Sifu’s sifu
Sihing	Senior gung fu brother (i.e. one who started before you no matter how old they are)
Sijo	Founder of a system, sometimes it is sigung’s sifu e.g.  Yuen Kay San; Leung Jan
Sijuk	Student of your sidai
Silo	Title for Sifu Zopa; refers to someone who is a scholar as well as a sifu – Sifu has five university degrees, for example, and has written extensively on Wing Chun so he is a proven scholar as well as a sifu; Yuen Kay San, being a lawyer,  could also be referred to as  “silo”
Simo	Your sifu’s wife
Simui	Junior gung fu sister (i.e. one who started after you no matter how old they are)
Sipak	Your sifu’s sihing
Sipakgung	Your sigung’s sihing
Sisok	Sifu’s sidai
Sisokgung	Sigung’s sidai
Todai/Toyee	Student, disciple
Tosuen	Sidai’s student
Tungmoon	Fellow student