This is real for me
http://www.tidewatertaichi.com/FAQ.html
As it says
Human Level
First Degree: Relax the tendons and ligaments from the shoulders to the tip of the middle finger.
Second Degree: Relax the tendons and ligaments from the hip joints to the bubbling well.
Third Degree: Relax the tendons and ligaments from the tail bone to the top of the head.
Earth Level
First Degree: Sink the qi to the dantien.
Second Degree: Use the mind to move the qi from the dantien through the arms and legs to the fingertips and bubbling well.
Third Degree: Use the mind to move the qi from the tailbone (weilu) to the top of the head (niwan).
((Hendrik’s. Note: my view on the earth level is, one doesn’t have to use the mind to move the qi. When qi is full it fill up and. Blockage remove, qi will circulate by itself naturally. It is like when the reservoir is full and the sue system is unblock, water flow by itself. Thus, at this level one needs to attain the natural flow instead of using mind to move qi . Qi will circulate by itself and one must not disturbed the qi flow. That is dao mimic the nature. ))
Heaven Level
First Degree: Listen to the energy and strength (ting jin) of another.
Second Degree: Understand the energy and strength (dong jin) of another.
Third Degree: Omnipotence Level. The mind (yi) relies on the spirit (jing shen) not the qi to mobilize the body. Rely on spiritual power and divine speed rather than qi to move the body and maintain the taiji point of balance and harmony with others.
In the reality, most tcma practioner never fully develop human level second degree. Majority never get to the second degree of earth level. Thus, no matter How one test one’s Jin, one can never go past one’s boundary limit of capability. It is like a weak battery will not run the cell phone long. The way one uses one’s body in normal person, human second degree, earth second degree different distinctively.
Those who has the higher degree and level attain will know the signatual or where to look for what other likely to be in.
As for true Jin development , it is at heaven level. According to gm Chen man Ching.
Hendriks note: in reality, things are not these clear cut, ie, one can learn listen to Jin even at human level but that level of listen is very clumsy.
So, in internal art standard, the Kung for Jin development is specific and clear. Thus, one knows no matter how one test the applications one needs to develop the level of Kung in solo first. That is the key of development.