I am currently working on a clothing mod, which is a little bit of a challenge, as I can't change the models for male and female citizens. So it'll be a bit "inspired by" traditional clothing.
I also have plans to do a start mod (just to have the rice, tea, etc seeds unlocked at the start), and if I can find some royalty free music, maybe something that adds new music to the game, though I don't know where to start with that one.
I'm also going to upload the mods to Steam and Nexus mods too, when I am done I think.
I hope you will take some inspiration from ancient chinese clothing styles as they were more varied.
Though the korean hanbok and japanese kimono were influenced by chinese textiles and clothing originally, the hanbok is more frumpy though cute and the kimono is high-maintenance and restricting (many layers) and is best worn for special occasions whereas chinese clothing was beautiful as in flowy yet also practical for movement.
In truth, there are over 56 different ethnicities and sub-cultures that comprise china's empire and if korea and japan had officially been swallowed up and considered provinces of one nation as china rather than separate independent entities, the diversity and variants of the different ethnicities would have just been considered part of the chinese diaspora but koreans were fiercely independent and japanese were formed from proto-korean (descendants of earlier koreans with some pockets mixed with residual ainu strain) and it's culture along with chinese influence.
Sort of if europe was considered one country instead of italians and french lumped together as if they were exactly the same culture etc. The west is usually only aware of mandarin (central) as in dialect, szechuan and cantonese (southern chinese provinces) sub-cultures of china.
For instance, chinese did not sit or sleep on the floor usually or use metal chopsticks (only koreans use metal chopsticks) and only koreans used ondol flooring but both chinese and japanese use wooden chopsticks but traditionally both koreans and japanese both sat and slept on the floor on cushions etc. Only koreans eat kimchi, not chinese or japanese etc. Only chinese used woks but not the koreans or japanese etc. The strains of rice crop also differs as only koreans and japanese eat medium-grain rice whereas all others grow and consume variants of long-grain etc. But for the purpose of the game, making distinction between rice crops is unimportant.