While gold prices will remain high, a controlled cost budget per ounce, regardless of the price of gold, is an important basis for determining the feasibility of underground mining, and the full cost per ounce should be kept at a lower cost of no more than $1,300. Gold price is another uncontrollable impact on profitability, I suggest that we can explore the forward trading scheme, in the appropriate gold price to lock a certain proportion of the price of products in-depth discussion, come up with a plan for the board of directors to study.