I havent sussed it out here so I cant answer that,but I will say that even in Vietnam the foot massages given paled in comparison to those in Thailand..
If given by someone who knows reflexology they first bathe your feet in warm water with lime slices and orchid petals,then give a gentle hand massage on each foot using Tiger balm(smells great and very hot)then they wrap one foot in a towel while they work the other.They use a blunt wooden stick and proceed to apply deep pressure to all your points on your foot.You can literally feel tension just evaporate from your body.If done correctly you will be fast asleep within 20 minutes and when u wake up you want to do it all over again!