Sima Hui carefully thought about it, and indeed he had not remembered the Fourteenth Prince having any blue on his head. He had held the Fourteenth Prince before and didn't notice anything, or perhaps he simply never discovered it.
"I don't remember there being one." Sima Hui replied.
"On the left side of his head, there is a blue mark," Ling Tianyu said, "That blue mark is not a birthmark; it's caused by a type of herbal medicine."
"What herbal medicine?" Sima Hui asked. He wasn't sure about the blue mark, but Ling Tianyu had discovered it, so there must be one, no doubt about it.
Otherwise, Ling Tianyu wouldn't have mentioned it.
"It's musk." Ling Tianyu replied.
"Musk?" Sima Hui heard and understood the function of musk.
"It's well-known that musk can cause miscarriages, but the Fourteenth Prince was already born, so musk had little effect. The pregnancy indeed lasted the normal ten months," Sima Hui said, "The timing is just right."
