Long Fan had diagnosed the cause of Mo Zhao's disease. He discovered that malfunctioned neurons caused his condition in that part of his body. Therefore, he had been giving Mo Zhao a kind of medicine to repair his neurons. However, it would take a significant amount of time to cure the disease.
Now, Mo Zhao was treating the Sanyang pill like it was his savior. Furthermore, he did not inform Long Fan about it and instead had asked other people to refine the medicine. It seemed like Mo Zhao did not trust Long Fan anymore which made him quite frustrated, and so he decided not to continue improving the drug for him anymore.
Anyway, even if The Great Lord did turn into a eunuch, it would not affect his spiritual power, and he could still lead them to conquer the world. Why should he be bothered since The Great Lord trusted someone else?
Long Fan decided to stop all his research regarding Mo Zhao's disease and started studying about other drugs.
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