In winter the old man likes to sleep on the heated kang.
Tips
culture
A 炕 is the brick or clay sleeping platform of northern Chinese homes, heated underneath by the kitchen stove's flue. It is still common in rural northeast China.
history
炕 takes its sound from 亢 (high / haughty), the same phonetic seen in 抗 (to resist), 航 (to sail), and 坑 (a pit).