Located in Beijing and established in 1921, PUMCH is the most prestigious medical institution and the supreme authority for complex and rare diseases in China. Beyond being the absolute pinnacle of rare disease diagnosis, it is internationally renowned for its rigorous medical traditions, elite multidisciplinary team (MDT) capabilities, and exceptional comprehensive care. Whether in autoimmune diseases, complex endocrine metabolic disorders, or highly challenging surgical procedures, PUMCH represents the highest standard of healthcare in China and serves as the ultimate destination for patients seeking definitive diagnoses and treatments.