Seeing Xuanzang's nine golden buddha worlds aggress on them and almost kill Patriarch Bodhi was a rude shock for them.
To Wu Yu, Patriarch Bodhi was one of the most trustworthy characters in the sky palaces. He had also helped him through many difficult chokepoints on his cultivation journey.
Heavenly Devil Battlefield, Immortal Emperor Trials, and finally even extricating him from the Peach Garden fiasco.
Wu Yu would not be where he was today without Patriarch Bodhi.
And seeing the Patriarch Bodhi on the verge of death triggered something...