Introduction to the Xue-shan-mu-chang Telescope China recently initiated a groundbreaking project, the Xue-shan-mu-chang 15-meter SubMillimeter Telescope (XSMT), located on the Qinghai-Tibet Plateau, often referred to as the ‘roof of the world.’ The construction of this large astronomical observation facility marks a significant step in enhancing China’s capabilities in exploring the universe, particularly the cold and…