Liu Fei's father, Liu Zheng, spoke up, "Your Majesty, please have someone wash this giant stone with water to see if it's a forgery."
Tang Yin didn't refuse. He directly ordered a palace maid to come in and scrub the stone. After all that effort, not a speck of color had fallen off the stone. The characters were naturally lighter than the stone's original color and didn't at all look like they were dyed. In the end, even Yang Tianwei couldn't come up with an explanation.