When he returned to the imperial capital from the starry sky sea, su Wu had accidentally mentioned the Xiangjiang clan. After they were expelled from the martial arts Research Institute of heaven's beyond, they had hidden in the hidden world.
After killing PEI hongyin, she decided to enter the hidden world. She decided to look for the Xiangjiang clan, and with the help of Xiang four, she would find a way to leave the hidden world and enter the heaven's beyond.
Back then, the Xiangjiang clan was one of the great clans in the human realm upon heavens. Although they were suppressed by the martial arts Research Institute, as long as their clan members were still around, it was impossible for them to completely decline. They should have some ability in the hidden world.
It was just that when she was calculating that day, she did not expect that she would advance so quickly.