You take out the serpent scale. A'hui places a hand over it. Both the scale and A'hui glow, transforming into …
You take out the serpent scale. A'hui places a hand over it. Both the scale and A'hui glow, transforming into a sword.
A serpent emerges from behind the emperor, attacking Zhang Yichao
You swing the sword forward, striking the serpent
QTE sequence to slay the serpent
As the serpent is slain and dissipates, Zhang Yichao's sigh is heard: "The edict is received."