On February 23, 2018, Armenian Ambassador to China Sergey Manasaryan visited Chongqing together with the Delegation of Envoys of SCO Member States to China, and Chongqing Mayor Tang Liangzhi met the delegation.

In March 2018, Manasaryan was invited to visit Chongqing. In addition, he visited Chongqing Lifan Technology Group and Chongqing K.C Home e-commerce platform to discuss cooperation. He introduced and organized relevant Armenian companies to visit Chongqing and seek practical cooperation.   

In March 2018, Margaryan, Mayor of Armenia's capital Yerevan, sent a letter to Chongqing Mayor Tang Liangzhi, expressing the hopes to build sister-city ties and promote practical cooperation between the two cities. On April 8, Mr. Tang Liangzhi replied to Mr. Margaryan, positively responding to his hopes.

In September 2018, Chongqing sent a congratulatory letter to Mr. Margaryan for the 2800th anniversary of the founding of Yerevan. 

In March 2020, the Mayor of Yerevan Hayk Marutyan sent a letter to Mr. Tang Liangzhi, expressing his sympathy and support for Chongqing's combat against COVID-19.

From January to December 2020, the total export-import volume between Chongqing and Armenia stood at about 12 million yuan; from January to May 2021, the total export-import volume hit approximately 5.45 million yuan.