Why have it done in China specifically?

China offers this treatment at a fraction of the cost in Western countries—approximately $13,500 for the full 7-week regimen, compared to $50,000–$80,000 in the U.S. or Europe. Chinese cancer centers, particularly in cities like Beijing, Shanghai, and Guangzhou, use advanced linear accelerators with IMRT and image-guided radiation therapy (IGRT) capabilities. Many oncologists and radiation therapists have high case volumes due to the prevalence of NPC in southern China, leading to extensive experience in managing complex cases. Accredited hospitals also maintain international standards for quality and safety.