Sun Zijun is a professional footballer from CHN and is currently 16 years old. He is on the books of Zhejiang Professional FC U15 and wears shirt number 9. His main role on the pitch is Defender.

Across the Chinese U15 League 2025, Sun Zijun appeared in 7 matches and averaged 0.7 tackles, 1.1 interceptions, 2.6 clearances, and 0 blocked shots per game.