Tang Yin came to the Four Seasons Sect because he wanted to take advantage of them. He possessed enough knowledge about them from the old woman's memory.
He knew that the sect housed many precious resources. Apart from trying to gain these precious resources, Tang Yin also wanted to head to the border of the war.
As a disciple of the Four Seasons Sect, he would kill Demonic Beasts and obtain their Demonic Beast Cores and sect contribution points. He would then exchange the sect contribution points for the precious resources in the sect.
He was going to kill 2 birds with one stone.
After getting what he wanted from the Four Seasons Sect, Tang Yin would then use the Heaven Deceiving Art to transform into a Demonic Beast.
He would slaughter many Qi Transformation Realm disciples of the Four Seasons Sect for their Spirit Flames.
After doing this, he would escape before any of the elders of the Four Seasons Sect could figure out his façade.
