C384 Withholding of information
Actually, if these two had fought separately, they would not have been so passive. They would not have had the chance to use the second move from the moment they were born to the moment they died.
And if they chose to compete with Yu Fei in Innate Qi, then they would have truly found the wrong opponent.
No one could compare to Yu Fei's dantian sea when he opened it