Yongbu could feel a slight tingle around his mouth, but soon the ends started to heal and they were no longer bleeding, what he was more concerned about was who had managed to attack him.
Celestials were special beings for a number of reasons, one of them being their celestial energy. This made it more difficult for just standard attacks to hurt them. The celestial energy was a type of energy that was able to suppress most attacks.
The celestial energy couldn't completely nullify an attack. It was more like one trying to get rid of a lake of water with a fire. With a big enough amount of fire, it could be possible.
Which was why attacks on a grand scale of power, or god slayer power, were able to hurt celestials but what was really effective was celestial energy itself.
Yongbu was already surprised when he saw Wince use her celestial energy which is why he had to take the fight far more seriously than he originally intended, but now there was another one to his side.