Telephone enters the homes of local residents in Qixia county, Yantai in 1991. [Photo by Lin Hao/photo provided to chinadaily.com.cn]

The world's first frozen cloned cow is born in Laiyang, Yantai on Oct 8, 2003. [Photo by Liu Xuelong/ provided to chinadaily.com.cn]

Zhenshan tunnel, the longest high-speed railway tunnel in Shandong province, is completed in Yantai on June 24, 2014. The 5,505-meter tunnel is part of the Qingdao-Yantai-Weihai-Rongcheng interurban railway. [Photo by Tang Ke/provided to chinadaily.com.cn]