How to bake sweet potatoes with firewood?

First, dig a hole under the firewood, put the sweet potato in it and cover it. You can light a fire on it. Don't get too close to the fire, or you'll get nothing. Don't touch the sweet potato once it is put down. According to the size of the fire, turn the sweet potato later (the bigger the fire, the more times you turn it). Until it is cooked.