A visitor interacts with a humanoid robot at the Mobile World Congress (MWC) Barcelona 2025 on Wednesday. The four-day event, which concluded Thursday, showcased cutting-edge technologies and innovative ideas spanning artificial intelligence (AI), 5G, and the Internet of Things. Chinese tech companies, including Huawei, Xiaomi, Alibaba Cloud, China Unicom, China Mobile, and ZTE, were among the participants.Xinhua