The monks of the previous Kong-Character Generation from Shaolin Temple haven't been seen in Jianghu for at least decades.
While the crowd was not sure how powerful Kong Jian was, judging by his formidable actions and his status in Shaolin Temple, he was certainly not weak.
However, Su Xin frowned slightly. He had a keen sense for battles and from his perspective, Kong Jian's movements seemed a bit rusty.
Most martial artists who retreat for cultivation mainly only practice their own realm. Few people shut themselves away to practice martial arts, so they are bound to feel a bit rusty if they fight after a long time.
This was not the case for Zhao Wunian, the True Martial Realm powerhouse 'Celestial Venerable Douyuan' of Great Zhou, who during his cultivation continually simulated battles scenarios in his mind to prevent too sharp a decline in his fighting prowess.