Have you heard of an expression "Comme ci, comme ça". It is a french expression that in English would roughly translate to expression "So So". Like in situation where you are not very sure if it is very good or very bad, some where in between of the two, you use this expression, "Comme ci, comme ça".
If we try to look at the literal meaning of the expression, it will split in two parts:
Comme ci = like this
Comme ça = like that
We will try to make use of the second part i.e. Comme ça in today's lesson.
Comme ça as mentioned would mean "like that" or "that way"
It is like that = C'est comme ça
Here, C'est means it is as we learnt in an earlier lesson and comme ça as now we know is "like that".
Now using negation in the sentence as we learnt in previous lesson