When Han Sen went back to the Qin Kingdom and Feng family castle, it was only four days later.
He heard that the Chu Kingdom's border had a scary ice god pulse manifest, and so the concept tempted him quite a bit.
His Dongxuan Sutra and Blood-Pulse Sutra were already able to break the world. The Story of Genes could manifest Spell. He did not need more power, but his Jadeskin was lacking. It required a rare gene race to reverse the power of his body. The Chu Kingdom had a super ice god pulse show up. Perhaps there was a chance of a rare ice gene race showing up.
Jadeskin was not completely an ice element, but one ice gene race for its body was likely enough. So, Han Sen wanted to go to the ice fields.