In recent years, a new “city bus” trend has been gathering pace in southern China.It offers a fresh spin on the “city walk” craze and sees buses transformed into roving venues for karaoke, film screenings and even yum cha.In Guangdong province, some young people are embracing what they see as the most local way to explore the region: using themed public buses to take in the slow rhythms of everyday life.While eating is banned on public transport in most mainland cities, passengers on...