What does Cao Xueqin mean by "Qin"

Cao Xueqin, formerly known as Cao Zhan, is also known as Xueqin, Qin Pu, Xiqin and the Taoist priest of keeping out the cold.

Cao Jia loved Su Dongpo's poems from his grandfather Cao Yin, and Cao Zhan was also deeply influenced by Su Dongpo.

Anyone who studies A Dream of Red Mansions will find that Cao Xueqin is not only a master of literature, but also an "expert" in cooking. When we look through the famous novel A Dream of Red Mansions, we will see a lot of descriptions about diet records and details. Cao Xueqin's name is closely related to diet. Cao Xueqin's favorite dish before his death was "celery under the snow". In Su Dongpo's representative work "Eight Poems of Dongpo", there are "Mud Qin has a long-standing root and an inch of loneliness; When the Xueqin moves, the spring pigeon will be fine. " That famous saying. And self-note: "Shuba Qin Gui bud, miscellaneous pigeon meat for it." Although the mud celery mud is dirty, its "snow celery" comes out of the mud without touching it. Su Dongpo often compares himself with Qin. The "snow" in Dongpo brothers' poems is mostly white, which has a protective effect. Therefore, Cao Zhan changed his name to "Xueqin". This is the origin of the name Cao Xueqin, a great master of world literature.