Review Detail of Poisoncheaker in I See the Aura of the Great Emperor in All My Disciples

It gets to a point it doesn’t make sense. There is this thing called heart of the realm and if it gets absorbed the realm is destroyed. Mc won’t take it away and protect it cause he is afraid of his peaceful life being ruined…. But then if it is absorbed his peaceful life will be over cause the realm he is in is destroyed. He always says he has no strength but then as soon as his disciples need help he instantly kills the enemy. Its like he suddenly becomes self aware then instantly forgets it after. Picking and choosing