The Ink Slab Won’t Grind Itself

"Assuming that you are right, what does determining the material of the canvas and the age of the painting have to do with deciphering the seal?" the copper-masked figure interjected Zhang Xuan.

"There's indeed no direct relation between them, but such analysis allows us to deduce the reason why Sorrowless Old Man has decided to leave behind a seal on the painting, as well as to determine possible flaws and deficiencies in the seal." Zhang Xuan replied with a smile.

"To claim that you are able to determine the flaws and deficiencies within a painting through just the age of the painting itself, aren't you being a little too conceited over there?" Zhang Jiuxiao tilted his head upward and harrumphed. Due to him speaking too forcefully, the durians on his head shook violently, seemingly ready to fall to the ground at any moment.