A humanoid robot about the size of a primary school student had something to share in Hong Kong – it sang songs and spoke to people in Mandarin and English, answering whatever questions they posed and delighting the audience around it. More than 100 robots were showcased at two exhibitions starting on Monday at the Hong Kong Convention and Exhibition Center. The X2 Ultra robot from China’s prominent humanoid robot manufacturer AGIBOT Innovation (Shanghai) Technology Co was among them.