I think one of the most powerful predictions is Yuan Tiangang's prediction of Wu Zetian. When I was in Yuan Tiangang, I liked to travel around the world and answer questions for the world. I once met Wu Zetian's biological mother by chance, when she was still a baby.
Yuan Tiangang thought it was destiny takes a hand, so she made a prediction for the baby. Because Yuan Tiangang didn't know what sex the baby was, he pointed to the baby and said, "If this child is a woman, it must be the son of heaven in the future." Many years later, this prediction came true, and China's first female emperor stepped onto the historical stage. During the reign of Wu Zetian, although the country changed hands, the people lived and worked in peace and contentment.
In addition, I think it is even more incredible that Yuan Tiangang and Li have counted Datang for more than two thousand years. He predicted the events in the next two thousand years and compiled these predictions into a push-back diagram. This book describes in detail what China will be like in two thousand years. So far, some contents of this pushback diagram have not been understood by China scholars. However, in the 2000 years after the Tang Dynasty, history seems to have developed by pushing back.