This seclusion, Lin Chen's Second Soul Division's main focus was practicing swordsmanship.
Whether it was witnessing Yan Ruyu's swordsmanship or Wu Qingxia's swordsmanship, Lin Chen had gained some insights.
His practice of the sword was aimed at elevating his own swordsmanship.
After practicing swordsmanship day and night in seclusion, Lin Chen's Second Soul Division surprisingly cultivated the High Mountain Flowing Water Swordsmanship to its peak, mastering all twelve styles.
It was unclear if it was the onslaught of sword intent from Lin Chen's Second Soul Division or some other reason, but he even realized the hidden Thirteenth Style within the High Mountain Flowing Water Swordsmanship.
This final style was more powerful than all the twelve styles before it, but it also consumed a great deal of spiritual power to execute. Calling it a forbidden technique wouldn't be an exaggeration.
