龜縮頸,耕牛之力
The turtle retracts its neck, the strength of the ploughing cattle.
五常,全寓性1
The five constant virtues, all residing in the sex.
Sex remains taboo for some, a power to be mastered for others and often a laughing matter for everybody. Still, old practices aimed to fully understand any and every part of one’s body, nothing was left untrained. Since it used to be a verbal transmission between a teacher and his student, the taboo nature of the topic was actually not a big issue. This is a bit different if it has to be written down and the present post will be as short as possible, most of this kind of teaching should be kept as a timely transmission from teacher to student.