It is preferred to use Chongyun as a Burst Nuke over Main DPS as his Normal Attack scalings are very low, even when including [C1]. His Burst on the other hand hits extremely hard on later constellations and takes a much higher total damage portion over his Normal Attack. On top of that, you can Reverse Melt all 3 hits of his Burst on enemies applied with strong Pyro, such as Bennett's Skill and Burst.

At [C2], his Skill reduces ability cooldown that is cast within the zone by 15%. This is one of the few abilities in the game that can reduce cooldown.

Chongyun's Burst is calculated as Claymore damage, which means it breaks Geo Structures / Shields at a much easier rate and can proc Shatter.