Small update rank 1427 qi every 12 years and 224 days it seems the requirement isn't at 9 qi(i'm not 100% sure since i couldn't see how much qi i had by life end but i think i had 9) so it's probably at 10 qi for end 4
Viewing post in Cycle of the First Dawn comments
Update rank 1689 11 years 181 days per qi, I finally achieved 10 qi by getting lucky enough whit the beast wave timing, It didn't unlock ending 4 though so I have 3 theories
1st it wasn't actually 10 and the game just rounded it to 10 so I didn't yer have enough for end 4
2nd I have to also have body higher than a certain trashold like 100 or power above 1000 or maybe all elements above 1% although this is the theory I'm more doubtful about
3rd there are items you need to obtain outside of town
Dev if you are reading this message I would like a tip towards the requirement of end 4 for the beastwave as well as maybe what the unreasonable edge case you talked about for the tea master is since I've been trying to achieve it, but the only idea I have left is farming elemental affinity whic is extremely slow to farm considering my highest affinity is water at just 0,8041%, I suppose In that case it would fit the extremely unreasonable adjective pretty well, I think i can get all to 1% whit another full day of just cultivating but for 10% I think I'm looking forward to almost a week of playtrough not to mention that if the requirement was set at 100% all that would mean like a month of just playing event while accounting for the mastery increase of the techniques slowly speeding up the affinity farm
Ending 4 might require you to have at least one of the talismans, since you get +5 Harmonized Qi only when you get all ten of them installed, as a "you started the correct thing, but you're not done with it" ending.
...I do suggest backing up the current savefile first, just in case I am wrong. I am not the dev and I am just guessing from what ending 5 says lol.