In fact, in addition to domestic gold futures, there are many financial derivatives that can be used to short gold, such as Warren and Niuxiong Securities, which are listed in Hong Kong (their characteristics are suitable for China investors). Take the international gold price COMEX gold as an example. The subscription certificates for financial derivatives issued by BNP Paribas are 10 154,10/55 and10/83. Wolun put certificate 10 160, 10 182. Subscription card means doing more. Put the card, and put it means short. Wolun is the warrant in front of China. Now trading in Hong Kong financial market. Hong Kong's Wolong market is also the largest Wolong trading market in the world. As far as the characteristics of worm gear are concerned, it is more suitable for domestic investors. It can be used as a portfolio risk management tool.