[originaltext] (1)The price of gold fell to its lowest level in five years

(1)The price of gold fell to its lowest level in five years in trading early Monday. For a time. gold was selling at less than 1.100 dollars an ounce on Asian markets. Some traders are calling the price drop a "mini flash crash".
    Thirty billion dollars in short selling took place within half an hour during what are known as "stop-loss" selloffs.(2)Traders executed sell orders when gold prices reached targets set by investors. The sales manager of a Singapore business that sells gold and other precious metals says, in the physical market, this would not be possible because that would consume a whole lot of physical gold. But in the futures market, because it’s all digital as long as you find a buyer to bid for it, then that would be possible.
1. What is the news report mainly about?
2. When did traders sell gold?