With Su Xin's sudden intervention, the White Lotus Holy Mother and her cohorts knew they were no match for Zhao Wunian.
Moreover, with Su Xin present, they were fortunate he didn't kill them.
The White Lotus Holy Mother had suffered a loss at the hands of Su Xin once before. This time, having learned her lesson, once she saw the situation was unfavorable, she didn't bother aiding Brahma and Ordo and promptly turned to leave.
Seeing this, Ordo and Brahma cursed inwardly. True to form, the people of the White Lotus Sect were unreliable, and working with them inevitably meant getting tricked.
Left with no choice, the two of them also turned to flee. Zhao Wunian and the others, however, did not pursue.
At the moment, within this World Fragment, time was of the essence, and seeking opportunities was paramount. Until the appearance of the ultimate treasure, there was no need for bloodshed.