Sentence Correction

One day, Chunoo and Munoo were playing with their siblings. Their parents were pleased to see them playing each other.

Pawpaw Tran playing each other.

That's a terrible correction.

Sica, what do you mean by "terrible correction"?

SicaThat's a terrible correction.

Thank you for your comment. The correct form is playing one another because there has more than 3 children. Together and each other use with less than 2 children.

Pawpaw TranThe correct form is playing one another because there has more than 3 children. Together and each other use with less than 2 children.

I still don't think "playing one another" is correct. It's not like you playing a game or a toy, you cannot play your sisters or your brothers! "Playing with one another" is okay, though. Yet, it doesn't necessarily

I agree with Sica. The original sentence works, or you could say playing with one another, or playing together, or playing with each other.
Playing each other is incorrect.

SicaI still don't think "playing one another" is correct. It's not like you playing a game or a toy, you cannot play your sisters or your brothers! "Playing with one another" is okay, though. Yet, it doesn't necessarily add this phrase after the end of the last sentence as the original already makes complete sense.

I do agree with you because their parents are

Pawpaw TranI have just searched on Google, there are many phrases like "play together" and "play with one another" but in this sentence it's not appropriate.

It might change the emphasis slightly, but it wouldn't be wrong.

In the above case, what is more appropriate?
Their parents were pleased to see them playing.
or
Their parents were pleased to see them play.