At this point, "Xiao Cui"'s quest isn't finished yet. Let's save at the nearby checkpoint.
After saving, go push open the large door.
Enter and start fighting the boss "Jade-Faced Gentleman".
Take out the two smaller enemies first, then deal with the bigger one. His attack patterns are similar to those of the regular mobs, much like the Ghost Enforcers we encountered earlier in the White Snake House. Watch out for the blue light attacks that follow his blink step.
The blue light attacks usually come right after his blink step.
He just repeats the same few moves; he's essentially a scaled-up version of a regular mob. Defeat him to obtain the weapon "Jade Twin Rings".
