Thetwenty-nihodiscalledSanDonkey.

leftandrightshoulders.

Thetwenty-sevehodiscalledYinapehuggingatree.

Themanislyingonhisbathebed.

Itistomakefulluseofthenarrowspaceforintercourse.

Themanstandsbehindthewoman.

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

A3Dstereoscopicholographicimageispresentedabovethelecturetable:thedthemousesharethesamepoint

A3Dstereoscopiispresentedabovethelecturetable:SanDonkey

A3Dstereoscopiispresentedabovethelecturetable:SanqiuDog

Holdthewoman''''swaistdownwithyourhands.

Itistoimitatethedog''''swayofintercourse.

Therostratesontheman''''sbody.

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

Holdthewoman''''swaistwithbothhands.

Themanisproppedonthebedwithonehand.

A3Dstereoscopicholographicimageispresentedabovethelecturetable:Yinapehugsatree

Supportonthebedwithbothhandsa.

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

Themansitsonthebedwithhisfeetstraight.

Thewomaheman''''sp.Fagtheman.

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

Thetwehmethodiscalledthesamepointofdmouse.

It''''slikeanapeleaningagainstatreetocopute.

ThethirtiethmethodiscalledSanqiuGou.

Holdtheman''''sneckwithbothhands.

Thewomanissupportedonthebedwithbothhandsa.

Thespecificapproachis:

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

Bothasstoass.

Theotherhahewoman''''sass.

Thespecificapproachis:

Straightenyourfeetforward.

Thespecificapproachis:

Thespecificapproachis:

Themanandthewomanarebacktoback.

Itislikeadonkeyusingitslimbstosupportitsbodyforintercourse.