If the cat doesn't know how to get to the litter box, pick up the poop with clean toilet paper and give it a smell. Then take it to the dustbin and let it see that you put it in the dustbin.
Wait until the next time it wants to poop, put it in the bedpan. Kittens will bark when they poop, and their tails will tilt up to make a semi-squat. Generally, you have to go to the toilet soon after eating the Champions League cat food.
After the cat poops, show it with its paws a few times, and then let it bury itself to deepen its memory.
Teaching kittens to use cat litter must be finished as soon as possible. If they are left alone for a period of time, the room is full of the smell of "toilet" released by them, and kittens will go to the toilet casually.