Throughout the series of incidents involving the Heavenly Blade Sect, it all begins with Ji Wanli from the Heavenly Gate Escort Agency delivering an escort assignment.
Tong Yun, distracted by this particular job, became mentally disheveled and ultimately disappeared.
Thereafter, the Moon Blade was stolen, leading Nangong Yu to determine that the person behind the scenes intended to target the Golden Jade Cone, thereby increasing their vigilance.
Fu Han Yuan's challenge was confirmed to be part of the enemy's plan.
It is very likely their objective was to force Nangong Yu to wield that blade.
At the same time, someone disguised as a Heavenly Blade Sect Disciple started setting fires everywhere within the sect, leaving the Heavenly Sect Disciples no time to attend to anything else.
Worried about the safety of the Golden Jade Cone, Nangong Yu went to investigate and was eventually followed.
