The Qian Yuan Sword Sect was defeated and fled to the Infinite Star Sea with their remaining forces.
After more than a thousand years of silent development, the Qian Yuan Sword Sect, which had recovered its vitality, launched a war and took the Infinite Star Sea under its command.
This period of history was almost well known.
This was because the slogan of the Qianyuan Sword Sect when they attacked the Yun Nation was to recover their homeland.
As for why the Qian Yuan Sword Sect was so " brutal " in the process of recovering their homeland, it was also related to the people left behind in the Yun Nation who basically betrayed the Qian Yuan Sword Sect.
Back then, when the Qian Yuan Sword Sect was on the run.
The families and forces loyal to it all chose to escape to the Infinite Star Sea with the Qian Yuan Sword Sect.
Only those traitors and fence-sitters remained in the Yun Nation.