BEIJING (Reuters), – China’s foreign exchange regulator published guidelines regarding foreign exchange trading on Friday. They were directed at market manipulation, fraud, abuses and other fraudulent behavior.

State Administration of Foreign Exchange stated that the guidelines were intended to regulate foreign exchange markets and promote fair, efficient, organized, and orderly market operations.

The guidelines state that market participants are prohibited from manipulating the closing currency price or benchmark prices. Furthermore, they can’t abuse their dominant market position to impact prices.

The guidelines stated that market participants will be prohibited from using any non-public or market-moving information for currency trading. They also won’t be allowed to use the information to help others trade.

Participants in market trading should conduct appropriate currency trading and actively adjust market liquidity. This will help to maintain a stable yuan at an acceptable and balanced level.

Sources told Reuters that a self-regulatory central bank group responsible for overseeing China’s foreign currency industry asked commercial banks not to increase the amount of their trading accounts. This was interpreted by many market participants as a way to restrict financial institutions’ speculation about the yuan.