I'm playing a campaign as Liu Chong (Normal/Normal difficulty, timeless general, with 2 mods: Waifu portrait and reset skills.
So I assume my mods and options do not give AI any retinue upkeep reduction.
However, as shown in my screenshots, AI has no upkeep or about 50% reduced upkeep. Both of my screenshot are taken in a same turn same campaign. The no upkeep is the army belong to BeigongBolu faction, the half upkeep is the army of Sun Quan.
Screenshots:
https://i.imgur.com/bLx0peM.png
https://i.imgur.com/7qr2TZu.png
Is this a bug or feature of Normal difficulty I'm playing? If AI is enjoying a reduced upkeep, I want to make/install a mod that make AI pay the same upkeep and salary as player.
Please help and thanks in advance