This kind of policy encouraged speculators' activity.
Tips
usage
投机者 is almost always negative in Chinese, closer to English 'profiteer' or 'opportunist' than to a neutral 'trader.' For neutral financial speculation use 投资者 (investor).
memory
投机 means 'speculate' or 'opportunistic' (literally 'throw at the chance'); 者 turns it into a person noun. 投机倒把 is the related crime of 'profiteering' from the Mao era.
