The soaring price of 20 13 bitcoin is determined by the bitcoin and Litecoin trading markets in China. At that time, the price of domestic bitcoin trading market was strictly higher than that of foreign countries. Some people buy bitcoin on foreign platforms and then sell it in the domestic market, which is profitable. Now the arbitrage of moving bricks still exists, but the number of participants and funds have been much less. And now the risk of arbitrage is very high.