Zibo in East China's Shandong province and Bratsk in Russia, on June 29 held an online video event to celebrate the 15th anniversary of becoming sister cities.
The coastal city of Yantai in East China's Shandong province established a friendly city relationship with Petah Tikva, Israel via a video link on June 28.
Mount Tai in Tai'an and Mont-Saint-Michel and its bay in France officially formed friendly mountain relationship on June 28 in Tai'an, Shandong province.
The opening ceremony of the Shandong-Brittany Friendship Exchange Year and the Sino-French forum on the protection and development of geographical indications was held in Jining, Shandong province on June 27.
Qingdao and Yerevan, capital of Armenia, established friendly cooperation city relations, contributing to the ties between the two countries.
The Global Youth Conference kicked off in Jinan, East China's Shandong province on May 13, and representatives from Yantai and its sister cities took part in the event online, in a bid to expand cooperation and deepen relationships.
With the Spring Festival fast approaching, the city of Zibo in East China's Shandong province has received its sister cities' Chinese New Year greetings via video messages that been sent by the city mayors.