first you go to this exchange buy hotcoins (HTC/BTC)
https://www.swisscex.com/

and sell them at here on this exchange (HTC/CNY)
http://beedui.com/

its a china based coin so price is higher on that chinese exchange
at beedui HTC price is approx 0.00006500 when it is converted from CNY to BTC
and at swisscex exchange you can buy them at cheap price
so you buy them at swisscex at lower price and sell them at beedui higher price and make quick and risk free profit

if you buy 0.25BTC worth HTC at swisscex at price of 0.00002500 BTC and sell them at suppose 0.00006500 BTC price at beedui then in less then half hour you can make 0.4BTC profit risk free