Will handmade landscape paintings fade to the touch? How to distinguish between manual and printed Chinese painting

Hand-painted landscape paintings generally do not fade when touched dry, but the part painted with advertising color may fade; Wet hands may drown the original painting with strong colors. To distinguish between hand-painted and printed Chinese paintings, you can first look at whether it is a famous painting, and if it is, it is too fake; In addition, the hand-painted texture will be richer, and the color of the seal and the concave and convex of the ink are also a place that can be distinguished.