The content tells about Taṇhā (craving) including craving for sensual pleasures, craving for existence, and craving for non-existence.Extinguishing the craving has to apply arahanta magga ñāna (Path-knowledge of arahantship) like we cut a tree to die, we have to dig out its roots. Whenever the craving is not extinguished, painful feelings often happen in our minds.