What's this casserole called?

No, the gas stove is not what the landlord said.

Gas stove is a kind of casserole produced in Yunnan. There is a tube in the middle leading to the bottom of the pot, but it does not extend out of the pot. When cooking, the food is placed around the tube, the casserole is cooked in the pot, and the food is steamed by the steam entering the casserole from the tube.

Gas stoves do not drain water. Here's the thing.

Suggest that the landlord send the pictures.