Meng Ito comes from Gu Yu's "New Collection of He Jingming's National Treasures" in the Ming Dynasty: "If you are a genius, you can cough and spit into beads. It's really human!"
Meng Siqi is from Siqi, King of Literatures: "Siqi is a big post, the mother of King of Literatures".
Meng Qichen is from "Lusong Pan Shui": "Watch him admire him and teach him a lesson."