Photo taken on June 3, 2019 shows the Peter and Paul Fortress in St. Petersburg, Russia. Chinese President Xi Jinping will pay a state visit to Russia from June 5 to 7 at the invitation of Russian President Vladimir Putin, a Chinese Foreign Ministry spokesperson announced on Wednesday at a press briefing. Xi will also attend the 23rd St. Petersburg International Economic Forum during his stay, according to spokesperson Lu Kang. [Photo/Xinhua]