2, with a mineral water bottle. Take a clean mineral water bottle, knock the egg to the bowl inside, hand pinch flat bottle, and then use the mouth of the mineral water bottle against the yolk, through the difference in air pressure inside and outside, the yolk will be sucked up.
3, knock hole method. Knock a small hole in each side of the egg, one end knocked into the size of a small thumb, the other side of the size of a pencil can be. After knocking, the big hole to the bowl, to be after the flow of egg white, crack the shell to remove the yolk can be.