Outsiders had to take it on trust that all the shouting and hand-waving by men in brightly coloured jackets meant they were paying, or being paid, a fair price.

• 那些局外人只能委托那些身着鲜艳马甲的人，他们的高声叫喊夹杂着手势意味着这些局外人能以合理价格买入或卖出。