http://en.wikipedia.org/wiki/Chakravartin
Chakravartin (चक्रवर्तिन् cakravartin, Pali
Cakkavatti), is a term used in Indian
religions for an ideal universal ruler, who rules
ethically and benevolently over the entire world. Such a ruler's
reign is called sarvabhauma. It is a bahuvrīhi, literally meaning "whose
wheels are moving", in the sense of "whose chariot is rolling
everywhere without obstruction". It can also be analyzed as an
'instrumental bahuvrīhi: "through whom the wheel is moving" in the
meaning of "through whom the Dharmacakra ("Wheel of the Dharma) is turning" (most commonly
used in Buddhism and Hinduism).
In Buddhism
and Jainism,
three types of Chakravartins are distinguished:[1]
-----------------
輪王 A
cakravartin,
'a ruler the wheels of whose chariot roll everywhere without
obstruction; an emperor, a sovereign of the world, a supreme
ruler.' M.W. A Buddha, whose truth and realm are universal. There
are four kinds of cakravartin,
symbolized by wheels of gold, silver, copper, and iron; each
possesses the seven precious things, 七寶 q.v.
七寶
sapta ratna 薩不荅羅的捺 The seven treasures, or precious things, of
which there are varying descriptions, e.g. 金 suvarna, gold; 銀rūpya,
silver; 鐂璃 vaiḍūrya, lapis lazuli; 玻瓈sphaṭika, crystal; 硨磲
musāragalva, agate; 赤珠 rohita-mukta, rubies or red pearls; 瑪瑙
aśmagarbha, cornelian. Also the seven royal (cakravartin)
treasures―the golden wheel; elephants; dark swift horses; the
divine pearl, or beautiful pearls; able ministers of the Treasury;
jewels of women; and loyal generals.
四輪
The four wheels or circles: (1) 大地四輪 the four on which the earth
rests, wind (or air), water, metal, and space. (2) Four images with
wheels, yellow associated with metal or gold, white with water, red
with fire, and black with wind. (3) The four dhyāni-buddhas,
金剛輪 Akṣobhya; 寳輪 Ratnasaṃbhava; 法輪 Amitābha; 羯磨輪 Amoghasiddhi. (4)
Also the four metals, gold, silver, copper, iron, of the
cakravartin
kings.
四輪王
The four kinds of cakravartin
kings.
cakravartin wheel
turning
「輪王」，佛經上講，「金輪王」出現世間，他所統轄的範圍是一四天下。「一四天下」是一個單位世界。從前說法是一個太陽系，以太陽系為單位。若依黃念祖老居士在《無量壽經》后附「再記」中所說，就是一個銀河系，比太陽系大多了，統轄這麼大的範圍。「銀輪王」統轄四分之三。佛經裡講，一個單位世界四周，東、南、西、北，北面是北俱盧洲；東南西三洲有佛法，都屬他統轄。「銅輪王」統治兩大洲。「鐵輪王」統治一洲。這一洲，依過去的說法，以為是一個太陽系。
今天在我們地球上，還沒有出現過輪王，展開歷史，自古至今沒有一個帝王曾經統治過全世界。我們只有在佛經中見過，事實上，在我們世間歷史上，從來沒有出現過。這就說明地球上的眾生修的福報還不夠。
Gold = conquer 4
continents
bronze = conquer 2
continents
silver - conquer 3
continents
Iron = conquer one
continent
http://www.amtfweb.org/jingtu/wuliang52.htm
此王有四種:即金、銀、銅·鐵四輪王;鐵輪王其威德福力只能王一天下(1
continent),銅輪王王兩天下,銀輪王王三天下,金輪王其威德福力最為殊勝,故王四天下也(4
continents)。
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