The reason why Liu Mingxuan targeted An Lin was that An Lin had embarrassed him twice. The first time was at the grand opening of the Four Nine Immortal Sect, and the second time was the Blue Dream Ancient Sword incident.
An ancient sword in the ancient sword tomb of the Heavenly Sword Sect had finally nurtured a spirit, only for it to run away and accept one of An Lin's retarded superfans as its master.
The retarded superfan Sun Yuluo was the most infuriating character in this incident. He had been expelled from the sect by Third Elder Zhu Yunshan, only to end up joining the Four Nine Immortal Sect.
Thus, the Blue Dream Sword now belonged to the Four Nine Immortal Sect.
The Four Nine Immortal Sect had somehow become the biggest winners while the Heavenly Sword Sect was left to wonder where they had gone wrong.