Litter is the capacity unit of traditional ruler penetration method in East Asia, which originated in China and later spread to Japan, Korean Peninsula, Vietnam and other places. Usually referred to as liter for short, it is a unit of capacity measurement, and the symbol is L. Used to use small script in the past? It is a symbol, but because it is inconvenient to print, it is changed to block letter L. Litres are non-international, litres are international units, and one kilogram is equal to two kilos. That's right. If people think that one liter is equal to two liters, it's wrong, and one liter is still equal to one liter.