What does it mean to enlarge Kang?

Expanding the kang means "making the bed and sleeping".

The enlarged kang belongs to the northeast dialect, and "kang" is a rectangular sleeping platform made of adobe or brick by northerners. There is a mat on it, and there is a hole under it that communicates with the chimney. You can heat it with fire in winter and sleep on it.

There are also heated kang in South Korea, but the so-called heated kang in South Korea is similar to the principle of using heated kang in rural areas in northern China. Wang Zhi, deputy director of Xi Amphetamine Heritage Protection Center, studied in Korea for many years in his early years, and made a systematic study of traditional Korean houses. He said that traditional Korean houses have warm kang, so you can sit on the floor as soon as you enter the door, and you can sleep on the spot when you open the quilt, just like geothermal heat. In fact, this was the habit of China people before the Tang Dynasty, because there were no chairs and stools in the furniture before the Tang Dynasty, and people usually liked to sit on the floor. Since the Tang Dynasty, China has used the technology of fire-resistant stove connection.