Chinese President Xi Jinping is in Moscow for a state visit to Russia at the invitation of Russian President Vladimir Putin.

The two world leaders will attend the 23rd St. Petersburg International Economic Forum (SPIEF) where President Xi will address a plenary session and explain China's stance on sustainable development.

The visit is President Xi's eighth trip to Russia since 2013 and comes as the bilateral comprehensive strategic partnership of coordination between the two nations is at its best in history.

Presidents Xi and Putin will review the achievements and experience in the development of the bilateral relationship over the past seven decades and charting the course for its future development.

The two leaders are also expected to sign or witness the signing of important cooperation documents and attend a gathering celebrating the 70 anniversary of bilateral diplomatic ties.

“We have the confidence and capability to bring our relations to a new era of greater development at a higher level, based on our experience and achievements of the past 70 years,” Xi said in an interview with TASS Russian News Agency and Rossiyskaya Gazeta newspaper on the eve of the visit.

President Xi's state visit to Russia will conclude on Friday.

Xi and Putin, maintaining a close friendship, have met nearly 30 times on bilateral and multilateral occasions since 2013. In a meeting with Putin in April, Xi said the bilateral relationship has become a major-country relationship featuring the highest degree of mutual trust, the highest level of coordination and the highest strategic value.