The city of Dushanbe, Tajikistan, became the 17th sister-city of Xiamen on June 20 2013. The Tajik capital is also Xiamen's first sister city in Central Asia.
Richmond is a culturally diverse city located on the Pacific coast in the Metro Vancouver area. The city is the location of Vancouver's international airport and hosted the 2010 Winter Games.
With more than 100,000 habitants, Trier is the biggest city in the west Rhineland-Palatinate. Furthermore, the city is adjacent to Belgium, Luxembourg and France.
Mokpo is the sixth-largest city in South Korea and capital of Jeolla Nam-do province located in the country's southwest. It is the third-largest port and logistics hub in Northeast Asia.