The Sara Us site is a National Key Cultural Relics Protection Unit and a renowned archaeological site from the Paleolithic Age. It is a classic site in China that can be directly compared with Western Paleolithic archaeological cultures. It has been recorded in the annals of world paleontological and paleogeological research, possessing immense cultural, archaeological, scientific, ecological, and tourism value.

In extremely cold winter regions, air-source heat pumps offer efficient, eco-friendly, and energy-saving advantages for heating. However, certain precautions must be taken to ensure system safety and stable operation. Below are five key considerations: