Prehistoric: from Blood Pool to Invincible

My name is Wu Pan, I have transformed into a great witch of the witch clan and awakened the defense system. Others seek to kill and kill me as immortals, but I only ask for one thing: no one can defeat me. So I stayed in the blood pool for millions of years, refining my body into a treasure. On the first day after leaving seclusion, he used some words to ask the twelve ancestral witches to collectively switch to defense. He conveniently collected the cause and effect of Sanqing, intercepted Taiyi's sun essence fire, and asked Nuwa to voluntarily join the Wu clan. Later, Taiyi brought the Chaos Clock to destroy the place. I asked him against a hundred thousand barriers: "Guess, will you die from exhaustion first, or will I break through the defense first?" After this battle, the entire prehistoric era knew one thing - The strongest attack is defense.