{ The gram, 1/1000 of a kilogram, was provisionally defined in 1795 as the mass of one cubic centimetre of water at the melting point of ice.The final kilogram, manufactured as a prototype in 1799 and from which the IPK was derived in 1875, had a mass equal to the mass of 1 dmof water at its maximum density, approximately 4°C.
I am the one who edited the first section of this page I was pissed when I saw so many wrong information was given to the public of our chinese people,Its was totally bullshit all above in this section,If ever asked someone who worked at a rice store in china before,they wouldall tell you that one liter of rice is almost 1.5 shijin or 0.75 kilogram.so be careful about what this baidu wiki tell you,everybody can edit it,include the idiots...and junior school kid.}