The Chinese president also said he invited the internationally isolated Putin to visit China later this year as both leaders seek an alliance to counteract Western power.
Beijing and Moscow's trade ties have boomed since Russia's Ukraine campaign, linking the nations more closely and raising worries in Western capital over how far the ties will go.
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Xi said China's government would "continue to prioritise the all-round strategic partnership between China and Russia".
"We are great neighbouring powers," he was quoted by Russian news agencies as saying during a meeting with Prime Minister Mikhail Mishustin.
Xi's trip coincides with a surprise visit by Japanese Prime Minister Fumio Kishida to Kyiv on Tuesday where he is expected to meet Putin's nemesis Volodymyr Zelensky.
Xi's visit to Moscow has been viewed as a major boost for Putin, who is under Western sanctions and subject to an International Criminal Court warrant over accusations of unlawfully deporting Ukrainian children.
Xi thanked Putin and said that in China Putin was extremely popular, the report said.
Chinese President Xi Jinping appears on Friday as guest of honour at Russia’s showcase economic forum, as the two neighbours present a united front in the face of shared troubles with the US.
"In less than 10 days our leaders will meet at the Shanghai Cooperation Organisation (SCO) summit" in Samarkand, the Russian ambassador to China, Andrey Denisov, told Russian agencies.
Nearly 13,400 people were forced to evacuate as water consumed hundreds of homes around the country, turning some streets into raging rivers of brown water, according to Haiti’s Civil Protection Agency.
Sheikh Hamdan said on Twitter, "We extend our sincere condolences and sympathy to the family, relatives, companions and readers of Khalid Al Qashtini, the Iraqi journalist and writer, and the owner of the creative pen, who enriched our Arab world with his publications. With his departure, the Arab media loses a symbol of creativity.”
The authorities said, “Abu Dhabi Police and Abu Dhabi Civil Defence Authority teams are dealing with a fire that broke out this evening at a warehouse in Mussafah industrial area.
"Every year, over 400m tonnes of plastic is produced worldwide - one-third of which is used just once,” said Antonio Guterres. "Every day, the equivalent of over 2,000 garbage trucks full of plastic is dumped into our oceans, rivers, and lakes.”