Xia Zhengrong was the Tower Master of the Black Tower Council. Although Lu Zhou beat him up, he could not be considered useless or weak. Even after Lu Zhou used the supreme mystic power to attack Xia Zhengrong with 20 consecutive strikes, Xia Zhengrong only lost one Birth Chart. With this, one could see how profound his cultivation base was. Not counting the 3,600 Dao inscriptions and his armor, he would need ten palm strikes with the supreme mystic power to destroy one of Xia Zhengrong's Birth Charts.
Even the Grand Tutor of Great Ming, Gongsun Yuanxuan, could not take one palm seal filled with the supreme mystic power even though he and Xia Zhengrong were both 12 Chart cultivators. The difference between the two was like heaven and earth.
To think Lu Qianshan said the so-called strongest expert in Great Yuan's royal palace would surpass Xia Zhengrong in 300 years.