C117 Yin and yang bipolar

In the depths of the cave, there were two smaller inner holes. These two holes were of the same size, but the temperature of the cave was completely opposite. One of them was incomparably cold, and one could feel a gust of cold wind emitting from the stone wall as if they had entered an icy cavern. The other cave was unimaginably hot. The temperature had reached almost 100 degrees Celsius