China and the countries of eastern Asia historically subject to Chinese cultural influence (such as Japan, Korea, and Vietnam) use a naming system based on the five Chinese elements : water (Mercury 水 星 "water star"), metal (Venus 金 星 "metal star"), fire (Mars 火 星 "fire star"), wood (Jupiter 木 星 "wood star"), and earth (Saturn 土 星 "earth star"). The names of Uranus (天 王星 "sky king star"), Neptune (海 王星 "sea king star"), and Pluto (冥 王星 "underworld king star") in Chinese, Korean, and Japanese are calques based on the roles of those gods in Roman and Greek mythology. In the 19th century, Alexander Wylie and Li Shanlan calqued the names of the first 117 asteroids into Chinese, and many of their names are still used today, e.g. Ceres (穀 神星 "grain goddess star"), Pallas (智 神星 "wisdom goddess star"), Juno (婚 神星 "marriage goddess star"), Vesta (灶 神星 "hearth goddess star"), and Hygiea (健 神星 "health goddess star"). Such translations were extended to some later minor planets, including some of the dwarf planets discovered in the 21st century, e.g. Haumea (妊 神星 "pregnancy goddess star"), Makemake (鳥 神星 "bird goddess star"), and Eris (鬩 神星 "quarrel goddess star"). However, except for the better-known asteroids and dwarf planets, many of them are rare outside Chinese astronomical dictionaries.