China and Russia's "profound" relationship will not change despite the turbulence in global geopolitics, Chinese President Xi Jinping told his counterpart Vladimir Putin at the opening of the BRICS summit in Kazan on Tuesday.

President Vladimir Putin welcomed his Chinese counterpart, Xi Jinping, to Russia on Tuesday, as the Kremlin head prepares to host several leaders of developing nations at an intergovernmental summit this week.

Noting that this year marks the 75th anniversary of the establishment of diplomatic relations between China and Russia, Xi said that over the past years the relationship between the two countries has weathered challenges.