Where does fusing Qin and casting Han come from?

Does the questioner want to ask "Where does Melting Qin and Casting Han come from?" From the praise of Bai Wenshao. Bai Wenshao is good at metal and stone seal carving. He studied under Cai Xiaopo, Mei Wenrun, Qiu Yanyun and Wang Guanglie. Melting the Qin Dynasty and casting the Han Dynasty refers to Bai Wenshao's gold and stone seal carvings, which are composed of the Qin Dynasty and the Han Dynasty. They have steady lines, skillful knife skills, simplicity and elegance. He is also good at traditional Chinese landscape painting, which is fresh and elegant. Melting the Qin Dynasty and Casting the Han Dynasty describes the skill of "melting the Qin Dynasty and casting the Han Dynasty", which is able to integrate the styles of previous generations and draw on the strengths of many schools of thought. It is mostly used in poetry, calligraphy, seal cutting and other aspects.