闰: Leap Day
之: "之乎者也," auxiliary particles, when used in personal names, often refer to someone with exceptional literary talent, profound knowledge, and deep cultural understanding. This character "之" is believed to aid in enhancing one's learning fortune.
Meaning: The character '闰' symbolizes the leap month, representing the extension and abundance of time, while '之' is a particle often used to connect or emphasize, together conveying the meaning of abundant and beautiful time.