Hold the woman's waist with both hands.

The man. Kneeling on the bed between the thighs of the woman with his right knee.

(A 3D stereoscopic holographic image is presented above the lecture table: Yan Tongxin)

Put

Raise your left knee. Spread your feet out.

The specific approach is:

Then do the mating exercise.

The eighth method is called Yan Tongxin.

Then do the mating exercise.

Straighten both feet forward.

Curl your legs and feet up.

The man rides from the woman's back on the woman's lower foot

The specific approach is:

Have the woman lie on her side on the bed.

Have the woman lie on her back on the bed.

Put it on the man's p.

Hold the woman's neck with both hands.

Have the woman lie on her back on the bed.

Then do the mating exercise.

It is like a passionate swallow with a heart to heart.

The ninth method is called Jade Crossing.

(A 3D stereoscopic hologram is presented above the lecture table: Jade Cross)

's raised foot with her hand.

Curl both feet forward.

The specific approach is:

Just like the mandarin ducks in the wild, they copute at will.

The woman hugged the man's waist with both hands.

It is to adopt a retively strong movement and posture for intercourse.

The tenth method is called mandarin duck bination.

The man rides on the woman. Prostrates on the woman's stomach.

(A 3D stereoscopic holographic image is presented above the lecture table: Yuanyanghe)