He quarreled with the great classical scholar Liu Bowen , causing the latter to resign from public office .
Their efforts contributed to Yang 's death , making Li the most powerful figure next to the emperor at the court in 1370 .
Li quarreled with the great classical scholar Liu Bowen , causing the latter to resign from public office .
Their efforts contributed to Yang 's death , making Li the most powerful figure next to the emperor at the court in 1370 .