从401取钱买投资房？拿2017有20%回报股市的钱投房市？加上交25%所得税？

First of all, you take the money from a tax deferred account and pay ordinary income tax to US government.  Donald Trump will say 'Thank You' to fund the government.

Secondly, you use the money to buy US real estate which will help raising our national GDP.  Donald Trump will say 'Thank You' again to you to make America Great Again.