When Ming Yun initially stole the Spiritual Objects from the Youfeng Zhang Family, he was pursued by three Mystic Immortals working together. Even as he fled all the way to The Void, he couldn't shake off their pursuit.
He almost fell into their hands, and if caught, he feared he would suffer endless torment and might even be reduced to a slave, beaten and scolded by others.
At this critical moment, he was fortunate enough to encounter Li Zhirui, who rescued him, allowing him to escape disaster.
Also, it was under Ming Yun's guidance that Li Zhirui came to the Tao Spirit Realm, where he later gained numerous opportunities.
The reason he returned to the Tao Spirit Realm was firstly because he felt that after so many years, the Youfeng Zhang Family should no longer be pursuing him.
Secondly, his Spirit Sense alerted him to return, warning of potential catastrophe if he delayed.
Considering these factors, Ming Yun risked coming back.
