札: Correspondence and epistles. In ancient times, these were small wooden slips used for writing, which later extended to mean letters.
博: Extensive, profound, erudite. When used in personal names, it often signifies a broad perspective and profound knowledge, greatly aiding one's career and fortune.
Meaning: No specific meaning, but the name has a smooth phonetic rhythm and can be interpreted as 'writing with erudition' or 'literary brilliance.'