You can get a vassals money/ancillary's by paying money per turn.. money per turn amount depends on your income and how much cash you currently have, then you can declare war with that vassals master therefore forgoing all those deals for no penalty. Same can be done vice versa to the master. This is best used when a master has multiple vassals to max your.... gains.

Giving cash per turn does net you relation NEXT TURN... HOWEVER trading back and forth an ancillary will update/automatically raise their relation with you.

So... when you leave your coalition, the military access/non aggro deals become available to offer again right? well you can just keep presenting those deals to the guy for cash/etc, join the coalition, exit the coalition then repeat selling your deals to them. You will only keep the deals for cash per turn with the coalition making, you can take their cash with the aggro/access deal tho.

Ma Teng you can become duke turn 2-Core exploit is you offer gpt up to 10 percent of your current cash regardless of how much gpt you have, so you can buy anything as long as you have a way to break treaties... like declaring war on the big dong. Aka buying han land simulator... if the ai doesn't have a capital in a region then them selling of resource lands are much lower then if they had capital then. Ex: with capital 4k without capital they would only ask 2k to sell that land to you.

Use the loose formation when generals (romance mode) charge at you... while it does give you like -900 charge resistance, instead of generals killing 30 of your guys per charge they will instead only be able to kill 3 since your guys are spread out...

The AI will target only visible units, therefore you can lure the AI back and forth on the map with 2 units, exposing itself then hiding back into a forest for example. If no visible units are shown the AI will go to the last visible unit's location. Thus if the time limit is 20 minutes you can run out of the clock, if a army has units/generals the ai will ignore the generals in terms of ranged units. You can ninja your way into a city by using this, whole army at one front and 3 generals or so at the other side, once you break in via bashing the gate or climbing and then opening the gate you can wipe some of the annoyance before your main army has to start the fight. Ideally its possible to win a siege battle with 3 generals even when the amount of enemies is 2k or so due to them not considering the risk of your generals and your ancillary's/skills... night battle+the skill that does -18 morale will route any basic unit asap.

Units with the stalk trait will not be shot by towers since they are not discovered, which means they perfect ninjas to take control points... just be careful of the civilians... they can cause your units to be discovered due to their petty fighting.

Movement Exploits:

Recruiting a general into an army then splitting that general will allow him to have full movement points, allowing you to cross large distances...recruit another general with your new general,disband your now old general and your new general should have full movement points... rinse and repeat.

It seems they fixed movement on generals so now the slowest is generals with artillery then infantry and then horses/solo.

So generals that take a city cant go into forced marched afterwards right? Well when you end your turn and then reload you can put those generals on forced march... this allows you to get a tad more extra movement points if your rushing or taking a place you know is gonna get attack next turn, you can escape the radius of the place allowing your generals to not be pulled into the battle.

Diplomacy Exploits:

Sell your land to a faction for straight up cash/ancillary's then declare war on them and take back the land, zero penalty. Probably should have generals deployed next to the land to capture it right back.

Destroying all the town's building nets you a few coins and you can sell that land for the same price. Do not do this to resource lands as that will decrease the value of it... not sure about resources that provide food tier 1 vs tier 3 tho, it will depend on the buyer's current stock of food.

Lu Bu: if you choose to become a vassal of liu bei then if you make a regular deal for something and then include coerce with the liberate me option you can get around the "cant use coerce during liberation"

All factions;

Anyone: Ze Rong's daughter gives you -2 construction time when heir/prime/leader, if you can discover the faction i would marry her. Having another clerk in 1 of those positions stack the -construction time. PS. this isn't really an exploit but I can not let this stay unknown..

Anyone: Liu Biao's sons+Cai Mao's are related... if you marry them each and divorce, staying with 1 of them will make all of them related to you, if you get them wifes then you can have over 10 relatives.

Anyone: If you put on an ancillary that allows you to do a certain assignment task, once that general is assigned you can take the ancillary off and the commandment with the assignment will still be in effect.

Specific factions:

Dong: recruit a general then execute them, 10+ intimidation, get to 30 you can spare and trade with the han, demand gold per turn... usually get around 600+ gold for 10 turns, rinse and repeat... you can just kill hundreds of generals doing this... i accepted always having a negative satisfaction penalty...

Dong: can marry zheng jiang turn 1 by making peace, raising her affection via ancillry trade back and forth instantly and once she is blue faced you can confed through marriage.

Zheng Jiang: turn 1 when you encounter the black mountain king, get all his cash/ancillarys and then start paying him cash per turn, use ancillarys to automatically boost his current affection instantly, when he’s blue face demand to confed through marriage and issue a ultimatum and he will accept.