Then secretly send Lei Long back to the mainland, letting him continue his duties as Prince...
Ye Hao wanted Lei Long to continue as Prince because Ye Hao likely wanted Lei Long to investigate more about the God organization. After all, Lei Long currently only knows about his own research lab.
He is completely unaware of matters regarding other research labs.
It is for this reason that Ye Hao asked Lei Long to infiltrate the God organization once again. Regarding this, the Duke of Thunder had no objections. He believed that Ye Hao's technology would prevent the God organization from realizing that Lei Long's body had been remodelled.
Lei Long's departure was silent and unnoticed. Xue Zhaolong and others were oblivious, treating Lei Long as if he were dead.
The Duke of Thunder and others intentionally concealed this and told no one. After all, with the God organization being so deep, Ye Hao couldn't ensure that no one from the Brotherhood would accidentally let it slip.
