I like ZTC he is fun delightful guy to study with..However, there is a sad truth about 4 tigers. It not that much about self discovery and internalization, it's about lost transmission and lack of knowledge. Chen Zhaopi was too old to show much sick and demoralized by cultural revolution while Chen Zhaokui brief visits interrupted by a sudden death from stroke in 1981 (yes it's genetic in Chen Fake line, Chen Fake brother died from a stoke as well)
The truth is there are no old frame and new frame (laojia and xinjia respectfully) as it presented today. There are only big (dajia) and small (xiaojia) frame in Chen method. Unfortunately Chen village lost it and had to make up for the lost knowledge on their own. Chen Fake line was able to retain original method. CFK frame was't really new (as it labeled by Chen village today) it shared the same core as the small frame. Contemporary Chen maser don't have that knowledge and marketing it as is. Only Chen Xiowang had some of it when he was young, but he changed it over the years for whatever reasons. What village has today is a sad display of modern sport wrestling - not traditional Chen. Here Chen Xiaoxing brunch
If one wants to learn traditional Chen I would recommend to look search for representatives of the small frame or Feng Ziqiang/Chen Zhaokui line..Although even within those lineages there are people who substitute lack of skills by famous teacher name (standard marketing move).So there is no guarantee but there is chance.
I'm personally happy to settle with Chen Yu line after spending decade with Chen village. I'm not afraid to start over and rebuild from ground zero. I'm my opinion authentic knowledge totally worth it