How to sit in lotus for long over one hour

How to sit in lotus for long over one hour. When i sit, at least for one hour recently. Ba'Ba' required two hours. In Taiwan, daily three times, at least for 2-1/2 to 3 hours. And most important, sit in lotus. Many margii ask a question how to sit in lotus. Many acarya gives wrong answers. Lotus is the most difficult yoga asana. i have seen many can not sit on it even for 10 minutes. Some Harta school teachers can do a lot of advanced postures but not lotus. When they sit in lotus, you see their two knees. One is above the floor. Why? So for long meditation, i used to do 8 hours nonstop meditation in fasting day. i know one Chinese monk can do over one week, two weeks long. One of his story as this following. In the mountain, He walked and walked for so many days. He walked to a hunter hub and stayed there in a snow storm day. He found out some potato. He lighted a fire under the pot. He put several potatos in the pot. Before his meal, he sat in meditation. When he woke up, he was ready to eat. But he found out there was no fire and those potatos in the pot he cooked had mold on it.