Common steps and sub-activities
Testicle stimulation [Wai Dan conversion/Gau Wan Yunn Dong]

Jeng – hold the testicles with the hand [your hand, your partners hand] and then lift them up and let them fall, jiggle them gently in other words.
Rou – rou means to massage except that you hold the skin of the testicles and move the skin over the area under the skin, thus ensuring you don’t rub the tender skin too much and only massage and stimulate the balls beneath.
Tsuo – this time stroke the skin of the testicles very gently
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Observations
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