Ranks within the story. This story took place in the imeperial times, more of the fashion won are of similarity to the Qing Dynasty (not korea,, i've been super into chinese imperial dramas). So some of the etiquette are of the same from the imperial times. The rankings I wrote are only the rankings that are in the story, of course there are more ranks than these

Ranks: (Males)
Heshuo Qinwang - Prince of First Rank
Duolo Junwang -Prince of Second Rank
Duolo beile - Prince of Third Rank
Gushan beizi -Prince of Fourth Rank

All males are refered to as 'A-ge' in the story, translates to 'Lord' in Manchu language.
For older males, "Lao'ye" means Master or Old Lord
Ah'ma is father

(Females)
Junzhu - Princess of third rank, granted a princess born to a Qinwang, usually refered to as 'Qinwang Gege.' or called 'heshuo gege'
Xianzhu - Princess of fourth rank, granted a princess born to a Junwang, refered to as 'Junwang gege.' or called 'duolun gege'
Junjun - Lady of First rank, granted to a daughter born to the secondary consort of a Qinwang or the daughter of a beile, also called 'beile gege' or 'duolun gege'
Xianjun - Lady of Second rank, granted to a daughter born to the secondary consort of a Junwang or the daughter of a beizi, also called 'gushan gege.' or 'beizi gege'

Ge-ge refers to princess or lady of rank
Some servants refer to them as "Zhu'er/Zhu'zi" also known as Mistress/Master in the story.
Fu'ren refers to Madame in the story.
Er'niang is Mother in manchu

A head servant usually walks by their master side(females), they walk by supporting their master's hand. E.g. if a master holds out their right hand, the servant will support the right hand with the servant's right hand and the servant's body will be slightly behind their masters, sometimes their upper body will turn parallel to their master. to support their master in the difficult shoes.
Females wear(right is what they normally wear and left is for ceremonial events/special occasions, ignore the hair pls), if you look closer there is a button near the right chest area, that is where prayer beads are usually hung for the young women their hair are let down, some simple pins in them. Older women have their hair in high buns and some simple  The servants wear clothing of similar design for the females but it is simpler.

Ways to salute:

1) Zuo yi- hands placed in front of chest and bow
2)  Da qian - Males(regardless of servants/nobles) Bending of the right knee and reaching out the right fist touching the ground, I call this side squat in the story.. For the females(usually nobles) they do not lower their hands. The females will touch their right knees on the floor, their hands will land on the left leg that isn't touching the floor. They will lower their heads slightly and gaze, this is also known as a deep squat in the story
3) Gui- kneeling down.
4) Kowtow- kneeling + full bow.

Because this is in the Qing Dynasty.. the props used are similar to that of those used in Qing.

Teacup - Hand hold the 'saucer' and bring it up to the lips, the lid is used to cover the mouth while drinking. Something the lid is tilted to 'stir' the drink contend.
Handkerchief - Women sometimes hold them in their hands and swing them while walking.