Mount Penglai

Penglai (Chinese: 蓬萊仙島; lit. 'Penglai Immortal Island') is a legendary land of Chinese mythology. It is known in Japanese mythology as Hōrai and Bồng Lai in Vietnam.

Location
According to the Classic of Mountains and Seas, the mountain is located at the eastern end of Bohai Sea. According to the pre-Qin mythology which retells the legend of Xu Fu presenting a memorial to the Qin Emperor in order to seek for the elixir of life, there are three godly mountains which are found in the Bohai sea where immortals reside. These mountains are Penglai, Fāngzhàng (方丈), and Yíngzhōu (瀛洲/瀛州). Other islands where immortals reside are called Dàiyú (岱輿) and Yuánjiāo (員嬌).
In the Illustrated Account of the Embassy to Goryeo in the Xuanhe Era (Chinese: 宣和奉使高麗圖經; Xuanhe fengshi Gaoli tujing), written in 1124 by Xu Jing (徐兢), Mount Penglai is located on an inhabited island which is found within the boundaries of Changguo prefecture and can be reached "after crossing thirty thousand leagues of the Weak Water".
Various theories have been offered over the years as to the "real" location of these places, including Japan, Nam-Hae (南海), Geo-Je (巨濟), Jejudo (濟州島) south of the Korean Peninsula, and Taiwan. Penglai, Shandong exists, but its claimed connection is as the site of departures for those leaving for the island rather than the island itself. In his work Taengniji  (lit. "A Guide to Select Villages"), Yi Chung-hwan, a Joseon-period geographer, associated Mount Penglai with Korea's Mount Kumgang.…