Duke Kang // Imperial Noble Achievement help needed

[Gabez]

Would like to check what are the known quests to hand in to raise relations with Duke Kang's faction to 80+?

Gifting Princess Fuqing ( inseparable)
greeting every npc in the faction to provide a lil boost to relations
marrying princess fuqing
the nine factions (poisoned well) quest seems to have a relation but i dont see any relation increase.

Will appreciate any help regarding this as I checked the guides (mainly explain to raise relations to 80 with the above and hand in quests) but what quests do i have to take note of?

I have not done the nameless quest direction despite multiple runs (yan gexing's one)

I did a couple of flawed runs from my branched off saves (most major factions/sects not joined prior to fame 8+ quests) but as long as i had the imperial seal/separate 3 seals, it will wired me towards the duke chai/emperor ending.

I tried not combining the seals and somehow managed to betray marshal Ye and still either no signs of the kings/emperors' palaces surfacing or no signs of supreme court even after days of resting (post rescuing the prev xuan he emperor w/ or w/o chuxiang siege happening)

[The Guy]

I think you have to go through martial Ye's questline, then always side with king Kang.

[Isujeong]

Always report to Duke Kang in Ye's questline. Then before the imperial court, Kang will ask for a meeting. After this, you can betray Ye to help Duke Kang.

[Gabez]

yes. thank you. i managed to do all the nameless endings + duke kang's noble son together.

doesnt have to be 80+ relations with duke kang. did it at around 62 respect/honored with his faction. guess the main trigger was being in Ye family and submitting questlines to him while picking up from marshal ye.

betraying will spawn nine factions mainbase location but following the loyalty path have to end first before the last location will spawn.