放空炮
【注音】fàng kōng pào
【解释】说了一个或一堆计划，不能实现，就像炮弹打出去了，没有目标，没有效果。
It’s a metaphor for empty talk or idle boasting, which are like empty gunshots with no goal and no effect.
【例子】
例：我们现在要实际的行动，不能光说大话，放空炮。
Ex.：Now what we need is pragmatic action but none of your empty talk.

放风儿
Release news
【注音】fàng fēngr
【解释】透露某些信息。
Meaning leak some information, spread news or rumors.
【例子】
例：政府已经放出风儿来了，居民可以去银行贷款买房。
Ex.：The government has already leaked information that residents who want to purchase apartments can apply for a loan from the bank.