There were 2 ways of “YooFai” in the past,
1. Staying fire: lying by the fire near the abdomen.
2. Stretcher (sling bed made of bamboo) fire: the mother lie down on the stretcher and the stove was underneath (roast method),
Normally they would use the 1st way. Husband or relative will take care of fire. Normally “Yoo Fai” will take about 7-15 days after delivery and the mothers will not leave the room in order to maintain balance of body temperature, promote healthy condition and ward off illness.