Culture
Khitan
set_culture khitanCulture ID khitan. set_culture changes the culture of the character you play; change_culture <county id> khitan changes a county's. Both need the debug mode (launch option -debug_mode).

Traditions
The traditions this culture starts with, and what each one does.
PastorialistsRealm+1 Prowess
Sacred HuntsRitual
Ruling CasteRealm+0.3 Dread Gain per Tyranny, -30% Dread Decay, +25% Siege Progress against Revolts
Added with a DLC
- Malleable Invaders with Hybridize Culture
- Iron Cavalry with Khans Of The Steppe
Bellicose ethos
This culture considers conflict and violence to be necessary states of existence; ingrained in its people is the idea that one should stand up and fight for their own.
Martial custom: Equal
- Both men and women can be Commanders and Knights
Other Mongolic cultures
Buryat, Kerait, Mongol, Naiman, Oirat, Öngüd, Shiwei, Tuyuhun
Source: game/common/culture/cultures/00_mongolic.txt, game/common/culture/traditions/00_realm_traditions.txt, game/common/culture/traditions/00_ritual_traditions.txt, game/common/culture/pillars/00_ethos.txt, game/history/provinces (counties at the start) and the English localisation, Crusader Kings III 1.20.0.3.