Often we hear someone has or hasn't a complete system . My question is , what is a complete wing chun system? If we look at Yip Man's lineage there isn't two Yip's students , even his sons, who have same curriculum . Sometime system's contents are so different that is hard to believe they all came from same source (teacher) . Now, what is a criteria for complete system, what is a minimum technical or any other content that make some system complete ? How can we determine if system is complete or not , this is especially important for people who are starting their wing chun practice?
This is where things get iffy.
Wrestling was a part of Okinawan Karate training, I believe it was Wados founder who even took the time to make videos of it.
Now because of that, and Jujustu's influence, Karate has a myriad of grappling moves actively taught both in and out of kata.
Nearly all of which can be drilled and practiced in a BJJ/wrestling environment and if you look enough, you can find Okinawan karate schools that do many of those drills and some free wrestling. But, it isnt the point of focus or done nearly as much as striking. Generally, what is is based around getting back to your feet with a lock or choke if that becomes impossible.
These trickled into the many of the korean systems as well, the locks, chokes, etc we do from our lineage to JJ/karate can be done from both standing/rolling.
But like most schools, we drill the application itself with a resisting opponent whose already in control of, rather than spending an hour or two live wrestling.
BJJ is essentially the opposite. It's grappling came from the same place as ours, but the style was taken in the opposite direction.
Strikes to set up grappling vs grappling to set up strikes.
Now, what would make a complete system?
Simply having the tools for both, while favoring one?
or
Regularly, training both the point of equilibrium?
In theory, the karate guy can take 30 minuted of each class 7 days a week to focus on Wrestling/grappling practice. But his grappling still wont be as refined or well versed as the BJJ guy rolling 7 days a week for 2 hours. Just as the BJJ guy striking for 30 minutes at the end of class isnt going to out strike the Karate guy doing the opposite.
Personally, I dont consider simply having the tools the criteria. For the exact reason above. For me to consider it "complete" they would have to be rounded off evenly, and no one style can do that.