Literature Reference: Thunder shakes a hundred miles; preparation leads to success, while lack of preparation leads to failure. Source from 'The Doctrine of the Mean' in 'The Book of Rites'.
雷: Thunder and lightning, the roar of thunder. When used in personal names, it often depicts a person who is decisive, courageous, and ambitious.
豫: Joy, happiness.
Meaning: Thunder symbolizes power and majesty, while 'Yu' represents preparation and composure, signifying readiness and steady action.