The power speaks for itself!
Jiang Tang provided these ghosts with cultivation resources and then went to chat with his parents!
He recounted his recent experiences to them and also mentioned that the place they are in now is not the Cultivation World!
He has never told his parents that he is a soul that has transmigrated; their son has long been gone!
Jiang Tang still keeps that little secret from his parents!
Actually, now that they are in the Eternal Star, releasing these ghosts won't cause any harm!
Those Heavenly Masters without much power can't harm these ghosts at all!
However, she also has her own concerns; ghosts have higher abilities than ordinary people, and even if a ghost doesn't intend to harm ordinary people, its mere powerful presence and Qi might inadvertently hurt them!
Jiang Tang explained the Dao to his parents alone, stating that the meaning of Heavenly Dao is roughly the same for all types of cultivators!