|Sister Provinces & Cities|
On August 13, 1982, Baguio City, Philippines and Hangzhou City, China established Sister-City relations in Hangzhou.
On October 20, 2002, Ilocos Norte, Philippines and Shandong Province, China established Sister-Province relations in Jinan, Shandong Province.
On October 25, 2005, Laoag City, Ilocos Norte and Laibing City, Guangxi Zhuang Autonomous Region established Sister-City relations in Nanning.
On August 21, 2009, Pangasinan, Philippines and Sichuang Province, China established intent of Sister-Province relations in Sichuang Province.
On December 3, 2019, Ilocos Sur, Philippines and Hubei Province, China established Sister-Province relations in Vigan, Ilocos Sur Province.