At the invitation of Chinese President Xi Jinping, Bahrain's King Hamad bin Isa Al Khalifa, Egyptian President Abdel Fattah al-Sisi, Tunisian President Kais Saied and the United Arab Emirates' President Sheikh Mohamed bin Zayed Al Nahyan will pay state visits to China and attend the opening ceremony of the 10th Ministerial Conference of the China-Arab States Cooperation Forum from May 28 to June 1, Hua Chunying, a spokesperson for the Chinese Foreign Ministry, announced on Monday.