Over four thousand years ago.

Before she was besieged by Ling Xuzi and others, she had taken in seven core disciples. The youngest of them betrayed her.

The eldest, third, and fifth died in that battle, while the second, fourth, and sixth managed to escape under her protection.

After temporarily shaking off Ling Xuzi and the others, she tried to find these three disciples, but only found the severely injured fourth.