Referring to energy diplomacy, to take Sino-Saudi Arabian relations for example, high-level visits have been extremely frequent since diplomatic relations were established. High ranking Chinese officials who visited Saudi Arabia were Foreign Minister Qian Qichen(1990), Prime Minister Li Peng(1991), Prime Minister Li Lan qing(1993), member of State Council Luo Gan(1995), Defence Minister Chi Haotian(1996), President Jiang Zemin(1999), member of State Council Wu Yi(2002), and President Hu Jintao(2006).