Fatal Journey (2020)

If you're watching fatal journey you probably already watched the untamed so why not watch the special edition.

You must like spin offs or you just like seeing your favorite characters together cuz same I do too. Those who are know they came of The Untamed, please watch the whole package loll

It's is spinoff of unclean realm's story of The Untamed.
Story revolves around the Nie Ming Jie and Nie Huai Sang.
Their relationship as half brothers and the story what happens in the time line of 16yrs from Wei wuxian's death to reincarnation as mo xuan yu

In both The Lost Tomb and Fatal Journey, we are focused on a main protagonist who's strongest contribution is their intellect and knowledge, supported by family and friends who help with the fighting aspects of their missions..

In both productions, there is a certain degree of supernatural/undead contribution to the conflict, as well as human complications. Plus, they both possess similar tones/moods, as well as primarily taking place in a tomb, composed of various traps and puzzles that must be solved to proceed safely (thus our MC's strengths are played to their full potential).

They also both belong to larger fantasy and bromance franchises:
Fatal Journey (although it could be watched independently in theory, if one does not mind spoiling the main franchise), is a branch-off story focusing on a side character from The Untamed - a Xianxia bromance adapted from a danmei novel. Meanwhile The Lost Tomb is the first installment series to the titular franchise - a modern fantasy (with cultivation elements) bromance story adapted from a novel series.