Xi sent the letter, his first to Kim in over eight months, on the occasion of the 76th anniversary of the founding of North Korea, Korean Central News Agency (KCNA) reported. "China and the Democratic People's Republic of Korea are linked by the same mountain and rivers and the traditional friendship has been further consolidated with the passage of time," Xi wrote.
"The Chinese side will continue to view and deal with the China-DPRK relations at a strategic level and from a long-term angle," the Chinese president added.
Xi stated that Beijing will bolster "friendly and cooperative relations by deepening the strategic communication and boosting coordination and cooperation," KCNA reported.
Kim also received congratulatory messages for the anniversary from Russian President Vladimir Putin and a handful of other world leaders including Cuban President Miguel Diaz-Canel, KCNA reported. "I am sure that the comprehensive strategic partnership between Russia and the DPRK will be strengthened in a planned way thanks to our joint efforts," Putin wrote.