Nianbadu, kingdom of dialects
Thirteen accents share one small town
- A migrant town at the three-province junction, named 'the 28th du' under a Song-dynasty district system
- Over a hundred surnames and thirteen dialects coexist in one town
- The old core runs nearly two kilometres, with 36 historic houses and 11 public buildings
- Guarded by mountain passes on three sides — armies and trade caravans had no way around it
