Can someone please recommend me some peaceful and non-dramatic historical slice of life? With a rational and calm MC (preferably female, but male is ok too), not much face-slapping or dog blood, preferably no direct royal harem or court scheming (even if it's there, shouldn't be dog-blooded). Since it's slice of life, the world building shouldn't have huge plot holes either. The more details, the better! I have read: Assassin Farmer Gateway to Happiness Transmigrating into the Female Supporting Character with a Good Life in a Laid-Back Novel Like Pearl and Jade Legend of Concubine’s Daughter Minglan Fugui Ronghua The Job of an Imperial Concubine The Chronicle of the Oriole Island Pampering Big Cat Wife Please recommend!!
If you don't mind JPN ones, then maybe Kusuriya no Hitorigoto & Housekeeper of the Hundred Blossom Palace would be of your liking Spoiler both MCs are maid of the palace's harem. One's an pharmacist & the other's a reincarnated former nurse. No world building. Some of the story could qualified as mystery drama (think of Case Closed/Meitantei Conan but w/ FMCs & took place in (fictional) historical CHN)
Not sure if it's what you're looking for, but below are some of the historical novels I enjoyed. Ascending, Do Not Disturb more cultivation than historical Chongfei Manual Common Sense of a Duke’s Daughter JP, western historical setting Eight Treasures Trousseau love the female MC, she’s really rational and calm The Yandere Came During the Night