This is beyond doubt.
After faking his death, Yan Dan could appear within the Mohist School under a brand-new identity. Operating under the guise of a newcomer, his cultivation and mastery of Mechanics would progress by leaps and bounds. The Mohist School would inevitably view him as a talent of immense potential, a true prodigy, and would spare no effort in grooming him.
Especially after the death of Jing Ke, when the Six-Fingered Black Knight was also growing old, they would naturally pour all their resources into cultivating Yan Dan, preparing him to become the next Leader of the Mohist School. Naturally, they would lower their guard against him.
Chapter 818