The rubbings are "paintings", but they are "double hooks filled with ink". Write one with two strokes according to the original words, and then black the white place in the middle. Long Ting was copied by Feng Chengsu, and Dingwu Lanting was ticked by Ou Yangxun, so it is different from Feng Ben. But now learning Lanting is a more authoritative copybook, and the original has been buried with Emperor Taizong.