Thetwenty-nihodiscalledSanDonkey.

Themanislyingonhisbathebed.

Itislikeadonkeyusingitslimbstosupportitsbodyforintercourse.

leftandrightshoulders.

Thewomanissupportedonthebedwithbothhandsa.

Thetwenty-sevehodiscalledYinapehuggingatree.

It''''slikeanapeleaningagainstatreetocopute.

Theman''''sfiligreegoesdeepintothewoman''''sgoldenditch.

ThethirtiethmethodiscalledSanqiuGou.

Itistomakefulluseofthenarrowspaceforintercourse.

A3Dstereoscopicholographicimageispresentedabovethelecturetable:thedthemousesharethesamepoint

Itistoimitatethedog''''swayofintercourse.

Theotherhahewoman''''sass.

Theman''''sfiligreegoesdeepintothewoman''''sgoldenditch.

Themanstandsbehindthewoman.

A3Dstereoscopicholographicimageispresentedabovethelecturetable:Yinapehugsatree

Bothasstoass.

Theman''''sfiligreegoesdeepintothewoman''''sgoldenditch.

Theman''''sfiligreegoesdeepintothewoman''''sgoldenditch.

Themanisproppedonthebedwithonehand.

Theman''''sfiligreegoesdeepintothewoman''''sgoldenditch.

A3Dstereoscopiispresentedabovethelecturetable:SanDonkey

Thetwehmethodiscalledthesamepointofdmouse.

A3Dstereoscopiispresentedabovethelecturetable:SanqiuDog

Straightenyourfeetforward.

Themanandthewomanarebacktoback.

Holdthewoman''''swaistdownwithyourhands.

Themansitsonthebedwithhisfeetstraight.

Thespecificapproachis:

Therostratesontheman''''sbody.

Thespecificapproachis:

Thewomaheman''''sp.Fagtheman.

Holdthewoman''''swaistwithbothhands.

Thespecificapproachis:

Thespecificapproachis:

Supportonthebedwithbothhandsa.

Holdtheman''''sneckwithbothhands.