The arrows from the Ice Naga's bow were quite similar to Song Jian's "Sword Silk" skill. The shot arrows would randomly attack all targets. The more targets there were, the more dispersed the attack would be. However, if there was only one target, all ice arrows would aim towards it. Even a defensive warrior could not withstand such an intense attack.
Most importantly, each ice arrow had a chance of causing a freezing effect. Amongst the many ice arrows, there would always be some that triggered the freezing. Once frozen, the victim would be at the mercy of the Ice Naga boss to be slaughtered.
However, Song Jian's Tai Chi Sword Skill could grant immunity to 90% of the damage and all adverse conditions. Plus, with the special effect of the Ring of the Fire God, it was not easy to either instantly defeat Song Jian or freeze him in place.