Head to Mount Huaguo and start by looking for the Gold Armored Rhino in the battlefield area covered with bodies you can spot him easily by riding a cloud up high. Break his horn first or youll just waste time hitting him anywhere else once you take him down youll get the Gold Suozi Armor.

Next up is the Cloudtreading Deer, which likes to jump around a lot and can be pretty annoying to hit.

After that, go find the Feng-Tail General, and make sure to dodge those tail swipes cause they hurt bad.

The last piece comes from the Emerald-Armed Mantis, which shows up inside Bajie near that golden tree surrounded by water, and youll get the Dian-Cui Loong-Soaring Bracers when you beat it.

Tip: the mantis wont appear until after you deal with the Feng-Tail General, so dont waste time looking for it before then.

Maybe interesting that you can check your armor list anytime to see which pieces youre still missing, and the game naturally leads you to these fights as you progress through the story anyway. Watch out for those charged attacks from the Rhino especially, cause they can end your run pretty quick if youre not careful.