This was the Li Family's "Painting Becomes Reality" bloodline divine skill. Through the secret technique passed down by Bai Xingzhi, combined with the bloodline divine skill, they managed to pull off the current "deceptive substitution."
Li Mo and Li Xue, two Li Family elders, hid in the distance, holding paintings prepared in advance. When Li Song drew the array pattern on the Li Family disciples, they could then perform the teleportation swap.
Su Changkong and Li Song had also had the teleportation array pattern drawn on them in advance. As long as Li Mo and Li Xue from afar activated their bloodline divine skill, they could immediately replace themselves with a painting scroll.
Therefore, what Su Changkong had to do was to buy time for Li Song, to transfer and swap Li Zhengao and the other two one by one, then make a full retreat.
Of course, this bloodline divine skill had a distance limitation. If the distance was too far, it wouldn't work at all.