The Thirty-first Zen Patriarch Daoxin became a monk at the age of 14, after following and studying with Master Sengcan diligently for nine years, he was taught the ultimate Dharma. Since then, he practiced even harder day and night, often sitting for meditation instead of lying down. Emperor Taizong of Tang Dynasty invited Master Daoxin to the royal palace four times, but the Master declined each time with the excuse of his old age. After he passed away, Daizong of Tang confer him the posthumous title of "Great Medicine Zen Master". His disciples Hongren and Farong spread his teachings far and wide.
Master Daoxin said that all methods are for liberation. Supreme Master Ching Hai explains: when we have Quan Yin Method, we have everything. Then we sleep and eat, just like Buddha is sleeping and eating. We take Buddha's food while eating, and we do Buddha's deeds in our action. After attaining the Tao, anything we do is within the Tao. No Tao is heretical.
We should know that a Master is omnipresent and omnipotent. It's him who is eating, doing and thinking. We should know and remember this 24 hours a day, thus we will be free from the circle of life and death. Don't think that "I" do this. Because when you think "I" do it, then "I" should come back. Since there is "I", I should exist. It will be different without "I".