Why is a man named Master Xie Jiu so accurate in fortune telling?

Hello! First of all, why is his name Xie Jiu? Because Gu Jie's brothers and sisters add up to nine people! He ranks ninth and is famous for his local fortune telling, so he is known as the nine masters! As for why his fortune-telling is so accurate … this is not easy to answer … When a reporter interviewed him, he only answered "secrets can't be revealed" … Many questions can't be explained scientifically … Not all questions can be answered … Thank you … Please give points …