The thirteen staff-using monks belonged to Shaolin Temple!
In Happy's memories from his past life, their abilities were much better than those of the thirteen swordsmen who followed North Placating Duke, who came from the imperial court of the desert.
The thirteen staff-using Shaolin Monks had astonishing combat abilities, and they also practiced Demon Slaying Staff Formation. They understood the essence of making someone fight continuously against a greater number until they destroyed them. As the monks took over each other's places in the formation, even if they had to face an attack by dozens of Blessed Realm players at the same time, they could easily receive the attacks and destroy them. They gained a name for themselves during the quest for the emperor's birthday.
Speaking of which, those thirteen people were Happy's senior brothers in his previous life. However, his abilities had been low at that time, so he had been nothing in their eyes.