"I am Shen Han, fangshi."  The exorcist directly addressed the spirit.  He was the one with the training, and it was his purpose to do so.  "I have come to understand that an Ogre has began to trouble this land.  We seek the aid of one of his victims in order to learn about him, so that he may be banished back to Hell where he belongs."  The speech was formal, courteous.  They were going to need the aid of someone if they were to learn about the Ogre.