He only guided Bai Shouhong to collect various Skill Magic Artifacts, which led him to neglect his cultivation. Then, he combined this with medicines to slow down Bai's affinity for Spiritual Energy and hinder his cultivation.
Now five years have passed, and everyone knows that the Prince of Zhongyong is fond of trinkets and neglects his cultivation, despite having top-grade Spiritual Roots which makes his cultivation progress slow.
With this impression established, it was convenient for him to begin further actions, sabotaging Bai Shouhong's cultivation with medicines.
Thus, creating accident after accident, Bai Shouhong experienced numerous failures in his breakthroughs, completely ruining his Spiritual Root aptitude. The result seemed only natural, and it did not arouse suspicion from anyone, including the King of Zhongyong, let alone alert the various surveillance branches set up by the Longevity Sect.
