The Nether River Patriarch was determined to take Wukong's life, to avoid any future revenge as a result of cause and effect.
Compared to Tathagata, the Nether River Patriarch had an extra decisiveness about him, kill if you must kill, without any dragging, not indecisive, striking ruthlessly. Perhaps, this was also because he hailed from the Asura Blood Sea, the ancestor of the Asura Clan, known for their love of killing and their decisive nature in battle, never holding back. How could the Nether River keep them under control without some real skills?
Using the Great Revolution Seal, Wukong forcibly carved a bloody path out of the Blood God Child's clones, a literal "bloody road." But the Nether River Patriarch was intent on killing him, how could he let him escape so easily? Moreover, Wukong didn't want to leave in his heart; if the Nether River killed all the people in the world, how could he carry out his revolution?
"Clang!"
