Need to collect all the pieces?

[呼啸霸天刀]

Where are the pieces? I've been all over the map, all the ruins, and I haven't found a shard. The task does not have any tips, I have finished the scorpion, the treasure of life I also handed over to the tree, what do I need to do next? Only the fragments of the main line

[Wlerin]

There are only three fragments available at the moment, one that you start with, one from restoring Yoz, and one from the very end of the Egg Princess questline.