Speaking with Li by phone on Friday, he sought to reinforce mutual political trust and discuss means to promote bilateral ties, especially socio-economic, according a statement from the Ministry of Foreign Affairs.
The two leaders agreed to strengthen bilateral cooperation to fight the pandemic.
Chinh also sought China's cooperation and support for Vietnam to obtain a Covid vaccine.
It aims to procure 150 million doses this year to cover 70% of the population.
It is only looking for more sources to buy but also to transfer technology to produce the vaccine itself.
On Friday, the Ministry of Health approved the emergency use of China's Sinopharm's vaccine.Vero Cell, Inactive, is manufactured by Beijing Bio-Institute of Biological Products Co Ltd, a subsidiary of China National Biotec Corporation.
This is the third vaccine approved by Vietnam for emergency use after Russia's Sputnik V and the vaccine produced by AstraZeneca of Britain and Sweden.
Chinh said preserving and developing the traditional friendship and comprehensive strategic cooperation between Vietnam and China is always a top priority and a focus of Vietnam's foreign policy.
Li promised to cooperate and support Vietnam in the fight against Covid-19.
He also said that China attaches great importance to relations with Vietnam and is willing to further deepen the friendly neighborly relationship between the two countries in order to bring practical benefits to the two peoples.
Vietnam has vaccinated 1.2 million of its 96 million people are against Covid.
It has been dealing with a new wave for more than five weeks now, and infections have risen to 5,250 in 37 of its 63 provinces as of Saturday morning.
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