Identification method of Gu Long's fake paintings and calligraphy
1. Observing the back of painting and calligraphy, the ink color of Colo version of painting and calligraphy will not infect the back from the front.
2. For the mounted cologne print, the back can't be observed, and it looks flat from the front and lacks texture. There is no astringency in touching the thick colors of the picture with your hands.
3. Some colors fade easily.
4. As long as you observe carefully, you can find that the added ink color obviously floats on the screen.