When the Great Eastern Sect attacked, they had to flee for quite a while. The escape story was unimportant, but when they were desperate, having reached the northwest and still being chased by the east, several powerful people suddenly appeared to protect them.
Although they were not as powerful as the Great Sect, they still had greater strength than those who were chasing them. They also belonged to the West, so they were respected throughout the continent. In the end, that great sect had to retreat to avoid offending them.
They were the relatives of the twins; later, they were enslaved by the Western sect that is now totally frozen.
They fought to the death against the demons, which strengthened them significantly. That is how they reached the Realm of Divine Knowledge at such a young age.
Tang Yin listened patiently to the two's story and nodded.