Elk Grove is a city in Sacramento County, California, located just south of the state capital of Sacramento. It is part of the Sacramento–Arden-Arcade–Roseville Metropolitan Statistical Area. As of 2014, the population of the city was estimated at 160,688. Wikipedia

Yantai, formerly known as Chefoo or Chih-fou, is a prefecture-level city in northeastern Shandong province, People's Republic of China. Located on the Bohai Strait and the southern coast of the Korea Bay, Yantai borders the cities of Qingdao and Weihai to the southwest and east respectively. Wikipedia