A korsi is a type of low table found in Iran, with a heater underneath it, and blankets were thrown over it. It is a traditional item of furniture in Iranian culture. A family or other gathering sits on the floor around the korsi during meals and special events, like Nowruz (Persian/Zoroastrian New Year’s Eve). A korsi used to be quite popular for entire families to gather together during yearly Yaldā celebrations.

Korsi is generally heated with electric elements or, traditionally, with a brazier containing hot coals that are placed under the table. The table is covered with a thick cloth overhanging on all sides to keep its occupants warm. The occupants sit on large cushions around the korsi with the cloth over their laps.

A special woven rug called ru korsi is usually placed over any blankets to protect them from food stains.

Source: Wikipedia