BEIJING (AP) — China's leading technology companies showcased hundreds of cutting-edge products at the World AI Conference in Shanghai — from advanced robotics to artificial intelligence systems. The nation's annual flagship AI event, which was held from July 17 to 20, took place against the backdrop of a heated U.S.-China tech rivalry. Chinese companies have developed more than 400 humanoid robot products, more than half the world's total, state media said. Open-source AI models from China are increasingly challenging leading American ones as they are more widely adopted globally. ___This is a photo gallery curated by AP photo editors.