___ Yuanbao, Sycee, Ingot, Good Luck Coins

INGOT
An ingot is a mass of metal, cast into a size and shape such as a bar, plate, or sheet, suitable for further processing.
It also refers to a mould in which metal is to be cast. Gold, silver, and steel, particularly, are cast into ingots for further processing.
As for the term, a gold bar would be the same as an gold ingot.

COINS
Shaped pieces of metal, so called ‘ant nose’ or ‘ghost head’, are supposed to have been the first kind of ‘money’ in ancient China, followed by the ‘bu- spade’ or ‘square-rectangularly footed spade’ form.
A round shaped coin with a squared hole in the middle is more commonly known as ancient Chinese coin. It is supposed to have come into ‘circulation’ during the end of the Zhou dynasty and the beginning of the Han dynasty.
People passed a rope through the holes to tie coins into strings. These strings were usually in groups of 100 coins (called diao) or 1000 coins (called guan).
Naturally, coins are a symbol of prosperity. According to Feng Shui, gifting someone three coins tied with a red ribbon represents sharing wealth and luck.

See also: Five Elements (metal is one of the Five Elements)