Sometime back in China many MANY years ago, probs dynasty, they used to do an execution method thats called "a thousand slices/slashes" and its where theyll cut you and whatnot but not to death, youre forced to experience every ounce of it and youll either die of shock or blood loss. Its usually a punishment for murdering another royal, betraying and smth else.
Theres an execution method back in time where youd be laid in a boat, facing up and theyll pour honey, feces and what not on your body, lock you to the boat and you slowly die. Youll eventually get maggots, infections and such because of the smells and what is being attracted.
Theres another execution method where they will put a cage over your stomach and place a rat inside it. They will make the rat stressed and try to escape, so itll dig at your skin until it borrows a hole and will come out of u.
Theres a torture method in much older times where youd be hanged in a cage wether that be stand alone on some cross or off of a building and you slowly die, people can even watch you and throw stuff at you too. humilation.