到此为止

shì qing dào cǐ wéi zhǐ

事情到此为止。

That was the end of the matter.

nǐ yǐ jīng cháng dào tián tou le dào cǐ wéi zhǐ

你已经尝到甜头了，到此为止！

You had a good time, so that's enough now!