An unconventional course at prestigious Nanjing University encourages students to call strangers to hone their social skills, challenging the traditional value of “do more, speak less”. At the top-tier institution in Jiangsu province, eastern China, former television producer and director Xu Kai launched a course called “Oral Expression” in 2015. Over the years, it has become one of the students’ favourite public courses. The course includes a legendary assignment: students must call a stranger...