Yan Zhaoge had many methods of dealing with things like the remnant soul of the Golden Crow that could not be maintained for long, only temporarily erupting with power.
For example, he could slowly drag it out, grinding down those of Three Foot Mountain.
Yan Zhaoge usually struck swiftly and domineeringly in battles with victory and defeat being decided within a short period of time, either side hence falling into defeat.
If he could obtain victory, he would virtually be crushing his opponent.
If he ended up being defeated, he would have no chance of turning the tables.
Still, this did not entail that he was unable to stably and slowly fight a battle.