Han Zheng had known the flaws of the Heavenly Demon Pill Method from the beginning when he had started practicing it.
The reason the Martial Arts path requires first creating the Dan Sea and then solidifying the True Pill is to use the Dan Sea to protect oneself, allowing it to accommodate the power of the True Pill.
The Heavenly Demon Pill Method goes the opposite way, first using the Demon Clan's method to solidify the pill, then using the Human Clan's method to retroactively create the Dan Sea, which faces immense impact.
It could be said that the stronger your True Pill is solidified, the more tragic your death will be.
Initially, the Heavenly Demon True Pill that Qin Wumie had solidified was so immense, but Han Zheng's current foundation was even stronger than when Qin Wumie had solidified his pill.
