Literature Reference: 禹锡玄圭，告厥成功。——《尚书·禹贡》 Yu was bestowed with the dark jade tablet, signifying his great achievements. Source from 'Shangshu·Yu Gong'.
禹:
The name of an ancient figure, embodying deep blessings, prosperity, and good fortune.
锡: Metal element, bestowed as a reward. In a name, it often signifies the auspicious appearance of a noble individual, embodying elegance, multifaceted talent, and harboring great hopes and aspirations.
Meaning: Yu was granted the dark jade tablet, symbolizing his monumental achievements and noble honor.