Lu Xuan had no intention of killing everyone from the Blessed Enclave.
He was nowhere near that savage.
To him, the ones from the Blessed Enclave also varied greatly, with many factions among them.
They were mostly divided into two major factions. One of them leaned towards working with the secular government. Those in this faction consisted of the WuTang Clan, the Maoshan Sect, and the Celestial Master Path among others. They had been the type that had been typically working with the regimes of the day throughout the ages.
The other faction consisted of the clans and sects who intended to take over everything as soon as they come to Earth. They planned to rule over the secular world as overlords.
Those people would've carved out the territories of the Human Alliance to their liking and reigned over those territories as sovereigns.
They were about to build a world where clans and sects superseded the nations.