Hearing Jiang Huan ask, Jiang Guangtai took a sip of water from the teacup and motioned for Chen Yang to talk to Jiang Huan.

"The reason is very simple, the ink used in painting in ancient times has a certain oiliness in it, and over time, it will form a layer of oil film on the surface of the ink."

Chen Yang looked at Jiang Huan and explained to her seriously, "Although we can't see or touch this oil film, it does exist. And as I said just now, the old ink is hard and dark, and the protection of this oil film forms a blocking effect on the water droplets, although it does not completely separate the water droplets from the ink, so that it can't

Chapter 548 of "Rebirth 93: Getting Married and Marrying Bai Fumei at the Beginning" is a treasure map? I am hitting it in my hand, please wait a moment,

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