A couple pose for photos at a seaside resort in Qingdao, the host city of the 18th Shanghai Cooperation Organization (SCO) Summit, in east China's Shandong Province, May 31, 2018. (Xinhua/Liu Junxi)

A couple pose for wedding photos at a beach in Qingdao, the host city of the 18th Shanghai Cooperation Organization (SCO) Summit, in east China's Shandong Province, May 2, 2018. (Xinhua/Zhang Cheng)

A couple pose for photos at a seaside resort in Qingdao, the host city of the 18th Shanghai Cooperation Organization (SCO) Summit, in east China's Shandong Province, May 31, 2018. (Xinhua/Liu Junxi)

A couple pose for wedding photos at a beach in Qingdao, the host city of the 18th Shanghai Cooperation Organization (SCO) Summit, in east China's Shandong Province, May 4, 2018. (Xinhua/Guo Xulei)

A couple pose for photos in front of a cathedral in Qingdao, the host city of the 18th Shanghai Cooperation Organization (SCO) Summit, in east China's Shandong Province, June 1, 2018. (Xinhua/Yin Gang)

A couple pose for photos at a beach in Qingdao, the host city of the 18th Shanghai Cooperation Organization (SCO) Summit, in east China's Shandong Province, May 3, 2018. (Xinhua/Li Ziheng)

A newlywed couple pose for wedding photos at a park in Qingdao, the host city of the 18th Shanghai Cooperation Organization (SCO) Summit, in east China's Shandong Province, April 17, 2018. (Xinhua/Guo Xulei)

A newlywed couple pose for photos at a beach in Qingdao, the host city of the 18th Shanghai Cooperation Organization (SCO) Summit, in east China's Shandong Province, May 3, 2018. (Xinhua/Li Ziheng)

A couple pose for photos in front of a cathedral in Qingdao, the host city of the 18th Shanghai Cooperation Organization (SCO) Summit, in east China's Shandong Province, May 23, 2018. (Xinhua/Zhang Cheng)

A couple pose for photos outside a cafe in Qingdao, the host city of the 18th Shanghai Cooperation Organization (SCO) Summit, in east China's Shandong Province, June 1, 2018. (Xinhua/Liu Junxi)