That's an interesting explanation. My (now defunct) Sifu told me that Jing is just Jin with a 'g' at the end. Maybe I missed something?
Are you saying that Jing is a something, or a place of sorts (lower Dan Ti'en for example) and Jin is the method of power? In other words, Jin is to Jing as Yi is to Shen?
My current teacher doesn't talk about any of the lingo, we just do our form and apply each Gua with a partner to understand what we should be focusing on. He's all about relaxation (which is awesome!).
Good to see you around Koujiryuu, even if we had some heated words in the past!
What you said essentially sums it up. Yes, Jing is tangible, it is the sexual energy, and it is also a place. Jin is the method of applying Jing. But where it gets complicated is that this also naturally involves Qi. You cannot work with Jing (essence) or Jin (power) without working with Qi- breath; in the literal sense. This is one thing some people miss, it's something you learn early but forget. Qi is not just energy but also breath, and this is VERY important for Jin. At this point it also strongly involves Yi; Yi is mostly related to Shen, correct, but it is also strongly linked to Qi. You cannot do anything with Qi without intention; likewise with Jin and Jing. If you have strong enough Yi you can transform Jing to Qi and vice versa; you can also invoke the kundalini, or Xi Shui Jing, and begin the alchemical process of turning Jing, to Qi, to Shen, to Void (nothingness). So yes, you could say Jin is to Jing as Yi is to Shen, but you could also say a lot of other similar statements and probably be correct. I think mentioned this once but at some point, they all seem to merge together. You can theorize and explain and talk about it all you want but the reality is that it's worthless unless you DO IT. What you're doing now with your teacher seems like it's about right. And yes, relaxation is totally key and probably why I like lying meditation (lying down) more than anything else. Hope this all makes sense.
To elaborate, it's actually a little more complex than that (Jin and Jing), though, when you factor in things like Yuan Qi (original or Pre-Natal Qi), Yuan Jing (original Jing) and so on. Basically, the goal as I understand it is to merge and reunify all these separate forces in the Lower Dantien. As I said, this happens through meditation, your Qigong forms (sinking the weight) and especially the Microcosmic Orbit. Most people, and most internal stylists seem to get to the point of having sunk the Post-Natal Qi to the Lower Dantien (the Qi from air and food), where it gathers with Original Pre-Natal Qi (Qi from the mother/fetus). Then, if they are lucky they gain some ability to direct Qi. They may also build Jin (internal power). But they never learn the method to transform Qi to Jing, and they might not even open their vessels, especially conception (renmei). The kundalini process can take a lot of time and it takes hard work, it took me 1 month of meditation and yoga 6 hours a day. Yes, I know it's short, but it felt like it was "meant" to happen when it did. (Prior to that I was still doing around 3 hours a day training for a year.) Most people don't have this time and most teachers themselves don't even have it. It was only after a lot of research that what I had done with the kundalini process was basically Xi Shui Jing to the Daoists. And in theory, this means unification of Original Qi, Original Jing, Post Natal Qi, Post Natal Jing rising up the spine to the upper Dantien to reunify with Shen. I kind of doubt that any Tai Chi or Ba Gua teacher would be able to explain this stuff, let alone teach someone to do it. I was only able to figure it out from a Daoist context after much research. So anyway, it seems like they may be able to develop Jin and Qi but kind of miss the Jing and Shen part altogether.
I could say more if it interests you, about what I feel in meditation and my experiences and so on, but I don't want to seem like I'm rambling. I started to write about it but then thought it sounded kind of crazy, delusional, egotistical etc. so I stopped.
I don't recall any heated words with you. It must have been 2 or 3 years ago now. Water under the bridge. And I totally respect your experience (I wish I
had a Bagua teacher here!)