The trade-rate he uses is 3:2:1 (met:crys:deut). Its not a fix rate, it can vary +- a bit. Everytime the merchant is called, the rate is selected randomly.

• 商人所用的交易比例为3:2:1(金:晶:重氢)，这比例不是固定的，它可以是多或少一点．故当每次召唤商人时其交易比例是被随机选定