Hello, Kim,. I'’m good.

Technically incorrect but it is common for many native speakers to write this as one sentence as you have done.

Thank you.

Alternatively, these first sentences could be restructured to “Hello, Kim. I’m good, thank you.”

TheYour question is very difficult to answer.

It’s common to specify the question here. “Your question is…” or “The question of ___ is…” or “Your question about ___ is…” are all fine and sound more natural.

In short, oOrdinary people properly cannot see the shortcomings of China and they love China for no reason.

“In short” is generally used after explaining a concept in detail, as a way to summarize the concept.

Only wWell educated and, sharp people can realize the disadvantagat there are issues ofin China, but they can do nothing, and they don't even dare speak out about ithem.

“can” in this sentence amounts to “are able to”. It might be more appropriate to instead say “do realize” or omit the word before realize completely.

“disadvantages” isn’t the best choice here, unless you say “disadvantages of China’s government” or “disadvantages of living in China”.

Yes, China has a strict sense system for sensing public opinions, and oppositeng opinions are not allowtolerated.

I think you meant to write that the system senses publics opinions, and this correction would be closer to that meaning. Alternatively, “China strictly controls the public opinion, and opposing opinions are not tolerated.”

“dissenting” is generally used to describe opinions in place of “opposite” or “opposing”.

TWhat you have heard about the filter is also true.

Alternatively, “The filter is also a reality.”
I would replace filter with something more common, such as “censer” or “censorship” if that is what you mean by filter.

China is so big and has such a huge population that it's too hard to eliminate poverty.

It’s necessary to add a qualifier to each clause in the first half of your sentence. “X is ___ and ___ that it’s ___”
To eliminate errors like this it is helpful to split the thought in two: “China is so big that it’s too hard…” and “China has a huge population that it’s too hard…”
In this second part, “is so” and “has such” are the correct constructions for a “too” statement.

I don't know if youYou may already know that Google, Facebook, Twitter and other websites are banned in China.

This correction is for the next two parts as well.

It's very common that some people love their country for no reason, while some people can see their country's disadvantageproblems and hope to make it better.

“Disadvantages” would usually be used when directly comparing two things. As a side note, if something is “at a disadvantage” means it is “worse because of” a cause.

The case willis happens in every country.

The US is a great country in the world, but it still can't satisfy all of its citizens.

Alternatively, “The US is one of the greatest countries in the world, but it still can’t satisfy all of its citizens.”

I have a beautiful hope, which is not only for China and the US, but for each country in the world: I hope they are wealthy, fair, just, democratic, strong and provide very good living conditions for their citizens.

This is a wonderful sentence — congrats! The simpler construction would be:
“I have a beautiful hope, not only for China or the US, but for each country in the world: that they are wealthy, fair, just, democratic, strong and provide very good living conditions for their citizens.”

Hello Kim,. I'm good.

In short, ordinary people cannot properly cannot see the shortcomings of China and they love China for no reason.

Yes, China has a strict sense system for public opinions and opposite opinions are not allowed.

China is so big and has a huge population that it's too hard to completely eliminate poverty.

I don't know if you already know Google, Facebook, Twitter.,

It's very common that some people love their country for no reason, while someother people can see their country's disadvantages and hope to make it better.

The caseis will happen in every country.

The US is aone of the greatest countryies in the world, but it still can't satisfy all of its citizens.

I have a beautiful hopewish, which is not only for China and the US, but for eachvery country in the world: I hope they arwill be wealthy, fair, just, democratic, strong and provide very good living conditions for their citizens.