The Global Mayors Dialogue Hangzhou & the 9th Hangzhou Int'l Sister City Mayors Conference will be held on September 25. The mayors and representatives from 24 cities in 15 countries and regions gather in Hangzhou to explore urban governance and sustainable development.

Hangzhou boasts 31 international sister cities and has established friendly exchange relationship with 42 foreign cities, which explains its vital role in boosting exchange and cooperation among international cities.