After verifying that He Junhu was unable to do anything to him, Mo Wuji was even more unbridled. Even though he had used up most of his immortal elemental energy, he was different from other people; he still had his elemental storage channels.
With the immortal elemental energy from his elemental storage, he was able to continue to rain down his onslaught of lighting rain.
Without the interference from He Junhu, coupled with the assistance of Han Qingru and Tong Ye, Mo Wuji slaughtered these Heavenly Immortals as easily as chopping vegetables.
Some of the stronger Heavenly Immortals managed to block against the lightning swords, but they would then be sliced by Mo Wuji’s Half Moon Halberd Light. Even if Mo Wuji wasn’t able to deal with them, Han Qingru and Tong Ye would not let them go.
Being merciful to their enemies would be akin to suicide.