This story is full of coincidences. When the Witch Ancestor took away the seven-year-old Wei Zhuang because of a coincidence, he used the coincidence as an excuse to send Wei Zhuang back to the track of life. When the agreed coincidence made them meet again, various coincidences caused Wu Zu and Wei Zhuang to deviate from their original tracks again...
And these coincidences turn out to be mirages or a match made in heaven.