Today, I saw an interesting saying.quote that said,

I'm not sure you mean 'saying' here. For me, a 'saying' is like an idiomatic expression (i.e. the grass is always greener on the other side). I think you mean quote.

According to the current situation in China, those with a higher scores in essayswriting are suitable.

And in a better society, it's the students who are at the bottom of the class and who will later accomplish nothing that are better suited."

I don't really understand what this quote means by 'better' society' but this sentence is grammatically correct I think.

Podcasts entered into rapid development in 2016, while most of the podcasts in China started in 2018.

By now, most podcasts are also run by media-related practitioners, favoring the elite, with almost no podcasts at the popularmainstream level; m. Most arecover serious topics chatting about economics, education, and successful people sharing their experiences, and o. Only a few non-fiction reports can be heard about the experiences of ordinary people.

This is a very long sentence, so I would be inclined to break it up :)

Not hearing individuals share their unique interests in a series.

I am so sorry but I don't understand the sense of this sentence! It isn't a complete sentence. I believe you are missing a subject.

But podcasts in the English -speaking world are indeed more exciting than ours.

I was impressed that one podcast took 6 hours for onedescribes in a six hour episode how to come up with a band album.

I don't think it was recorded in one sitting,. But although it was edited, but it was interesting.

This is grammatically a run-on sentence, so I broke it up.