Literature Reference: 嘉谷不夏熟，大器当晚成。—— 欧阳詹《徐十八晦落第》 Fine grains do not ripen in summer, great vessels take time to mature. Source from 'Xu Shiba Hui Luo Di' by Ouyang Zhan.
嘉: Praise, auspiciousness, celebration, and happiness.
谷: Surname, the essence of sustenance.
Meaning: Jia Gu refers to high-quality grains, symbolizing a bountiful harvest and goodness; 'Jia' implies praise and excellence, while 'Gu' represents harvest and nourishment, collectively signifying excellence and achievement.