Representing United States, siyuansun is active in the Age of Empires II scene. To date, siyuansun has played 6 matches in Age of Empires II. siyuansun focuses mainly on unranked matches.

siyuansun has never ventured into ranked gameplay in Age of Empires II. siyuansun favors Byzantines over other civilizations, selecting it in 50.0% of matches.