Treasure identifying Golden Eyes

According to Liu pangzi, "take the ink plum painting scroll as an example, this painting is very famous because it leaves a quatrain by Wang Mian. The trees in our family wash inkstone pool are blooming with light ink marks. Don't boast about the color, just leave the pure air full of heaven and earth. At the end of the poem, there is at least a blank about the size of a poem, which is the characteristic of his paintings

Yang Bo looked at Gu Changshun and said, "this is the simplest skill to identify Wang Mian's painting, and this painting just doesn't satisfy this simple feature."

Gu Changshun seemed unwilling to believe it. Looking at GUI Rongjiu, GUI Rongjiu nodded. "Yang Bo is right. This is indeed the biggest feature. But the photo is too small. Let's take it out and verify it."

Gu Changshun was very disappointed. He sighed and nodded: "I'll take it down."