Despite the summer vacation, Liu Xiaofeng, a professor at Hohai University in east Chinas Jiangsu Province, and his research team have remained immersed in the laboratory, focusing on developing humanoid robots with highly expressive facial features.Eyeing on optimizing human-robot emotional interaction technology, the research team has developed a new algorithm for generating facial expressions on humanoid robots.At its 26th annual meeting on July 2, the China Association of Science and Technol