SHANGHAI, (Reuters) – China’s Securities regulator has launched a crackdown against brokerages that use feng shui predictions to forecast stock market trends. State-owned media reported Wednesday.

China Securities Regulatory Commission stated that it has “zero tolerance” for illegal behavior in the stock exchange and punished brokers who used aspects of feng shui to analyse, forecast or offer investment advices. According to China Securities Journal, these brokerages were accused of using tiangan dizhi (Yin-Yang and Five Elements), as well as applying aspects tiangan dizhi and Yin-Yang.

It did not provide additional information or identify any brokerages which were penalized by regulators.

Guosheng Securities as well as Essence Securities received warning letters over the last year from regulators after publishing reports that used fengshui to formulate their investment strategies. According to statements made by regulators’ website, some of these comments prompted widespread market discussion.

This latest crackdown came as Chinese stock markets experience higher volatility. The blue-chip CSI 300 Index lost about 14% this year.

CLSA is a Hong Kong-based broker that publishes the tongue in cheek Feng Shui Index before the Lunar New Year. The index uses the Chinese zodiac as a predictor of stock performance.