Literature Reference: 真迹进来依数字，别收锁在玉函中。—— 《宫词一百首 十二》 Genuine works entered according to their numbers, separately stored and locked in jade cases. Source from 'One Hundred Palace Poems XII'.
玉: Jade, often referred to as precious jade, in names typically signifies something rare and beautiful, believed to enhance both wealth and interpersonal relationships.
函: The term refers to a letter and its envelope.
Meaning: Jade case symbolizes elegance and preciousness.