Literature Reference: 书：读书万卷，行万里路。—— 《汉书·艺文志》；沛：沛然而雨，润物无声。—— 《诗经·小雅·鹿鸣》 Read ten thousand books, travel ten thousand miles. Source from 'Hanshu·Yiwen Zhi.'; Rain falls abundantly, nourishing all things silently. Source from 'Shijing·Xiaoya·Lu Ming.'
书: Books, repositories of knowledge, embody wisdom. They express art and literature, convey profound thoughts, facilitate emotional expression, and are adorned with literary elegance.
沛: Describing abundance and prosperity.
Meaning: Knowledge is vast as books, and abundance is symbolized by nourishing rain, representing profound talent and blessings.