马后炮 (măhòupào) Belated effort (Advanced)

马后炮 (măhòupào) Belated effort 

The character “马 (mă) refers to horse; “后 (hòu)” means later or after and

“炮 (pào)” means big gun or cannon. Example: Nǐ zhè rén jiù shì mǎhòupào, shìxiān zěnme bù tíxǐng wǒ a. 你这人就是马后炮,事先怎么不提醒我啊。

You always give belated effort. Why …