IMHO,
let's look at 宗劲 Chong Jing and 寸勁節力 Inch Jing join power about White Crane Jing.
Brother Eric and Wuji and other high hands, please advise and correct me for my ignorance,
Thus, I have heard, ,
Chong Jing is said to be the jing similar to generated with a soft whip. it is a type of bouncing/springing type of Jing.
宗劲就像一条软鞭发的劲. 宗劲是一种弹劲
Inch Jing is a type of penetrating and explosive Jing.
寸劲是一种透劲、炸劲。
Join power is due to to issu this type of Inch Jing one needs the support of the Join power.
寸劲一定要借助节力
Those who has master Chong Jing could issue or emulate similar to Inch Jing type of power. as if the whip's body is soft but the tip of the whip is hard.
宗劲练的好的人,可以在发宗劲时发出类似于寸劲的劲力. 比方就是鞭身要软,而鞭头要硬。
HOwever, those who mastered Inch Jing will not be able to generate Chong Jing because
而寸劲发的再好也不能发出宗劲。
This is due to these two types of power generation are different and they have differences interm of the level of depth.
两者发力形态不同。
Chong Jing needs indepth Internal training to master it. and Inch Jing is not as demanin in the internal training.
With the above, we know today, the Yik Kam lineage of SLT is supposed to cultivate a type of Jing close to Chong Jing. and the methodology of cultivation is using the Emei 12 Zhuang's snake slide worm move technology.
Thus, when this type of power is master, it provide the practitioner a type of Energized "Water sleeve" which could activate 1, Reel, flip bounce... (for stick, link, feel......), 2, issuing Chong JIng or Inch Jing type of Jing at will.
For those who have no idea what is a "water sleeve" the following is a good clip about "water sleeve" or the sleeve of the role in the cantonese opera, pay attention to the female role and how she uses her sleeve.
http://www.youtube.com/watch?v=vg4R4aVCMkM
BTW,
IMHO,
There are three keys uniqueness of Yik Kam's WCK.
1, Slandering enter the main gate
2, Mai San Ciem or Close body reel for stick/seal..etc
3, Energize water sleeve power.
Just some thoughts