I only remember this arc. The mc is in a separate dimension with other disciples of a sect which he is not a part of. There are countless inheritance which is ranked and the first inheritance mc gets is something like stone skin. The mc finally stumbles upon a inheritance that has a 100% kill ratio which starts with massive waves of enemies. Afterwards it's something like a death bridge and a patience test where he has to thread multiple large thread through needles. All it comes to a end where he fights a old man with a minor devouring inheritance which the mc gets. After he clears that inheritance he gets 1 more which is a sword inheritance or something