There was a massive sale on filler content down at the writing store and this author stocked up in bulk. Things that could be said in 1 sentence are consistently said over five repetitive paragraphs. There are other issues with the story, there are always issues with webnovels, but these issues are easily dismissed. Cliche plot turns (barely a twist, a turn at best) ? Tropey, poorly written harem members that indicate a distressing lack of any knowledge or interest on how women actually think, feel, and act? Unnecessary foreshadowing on simply resolved schemes? Yeah. Good luck finding a webnovel without those things. But they can easily be balanced with more interesting MCs and writing, and just browsing the comments of QI shows there are plenty of people who apparently actively like these things.

But the filler. My god, the filler. One very merciless editor who sent back every chapter given and told the author to go cut out a good 60% chunk of it could have saved this novel, but alas, Chinese writers are paid by the word I hear.

I give this story the same amount of stars as the average amount of content in any given chapter. 40% real story, 60% filler.

(Actually it's more of a 20/80 split on average, because when you have literally entire chapters are nothing more than filler, it really messes with the statistics. But you get an extra star for having occasionally interesting enough alchemy stuff to get me to read 113 chapters of this rubbish.)

For example, Ren Dong and Xiao Ruyan. They have disappeared completely, and author even says that he only has 4 disciples, even though including those two, it should be 6. It doesn’t even say only in the heavenspan world.

Regarding the plot, there's nothing new. An alchemist emperor who was about to become an immortal got betrayed by his father's student. A piece of his soul fell to a lower realm and occupied the body of a newly dead, useless young master, along with a cheat. His goal was to return to a higher realm, where he belong, and avenge his death. You've seen it a hundred times before. There are, naturally, arrogant young masters, waiting to be slapped, but surprisingly, there are also many friendly ones.