Just found out theat Germany University tuition is free!

As a tricky Hong Kong person, my first questionresponse will be “No way, nothing is free”!

I don't know what you mean by "tricky." Calling a person tricky in English usually means they are deceitful or sneaky.

After I doing a quick search in internet.Internet search,

Well, my answer to you all, “Yes, it is free!”

These two sentences should probably be combined - "After I search" is not a complete sentence.

The reason behind this?

But the fact is that even no tuition is even required.

Let me ask the question in a not a -so -polite manner.

Do you think you are smart enough to complete a university degree in a German University?

Just found out theat in Germany U, university tuition is free!

You can also write "German university", so as to say any university which is German. You can, but don't have to add "I" in the beginning of the sentence. This way is less formal than it is when you add the "I".

As a tricky Hong Kong person, my first question will beinstinct is to say “No way, nothing is free”!

The statement isn't a question. You could also use "response", but in this particular sentence, I think most English native speakers would tend toward this phrasing.

After I do a quick search inon the internet.

Well, my answer to you all, is: “Yes, it is free!”

Do you think you are smart enough to complete a university degree inat a German Uuniversity?

I Just found out that the Germany University tuition is free!

As a trickyskeptical Hong Kong person, mythe first question will beidea that came to my mind was “No way, nothing is free”!

"Tricky" means "to be able to fool" or "something difficult to do for beginners". Also, you are talking about the past. Use the past"was".
Not the future"will be". Moreover, "questions" ask something and have interrogation points. "Idea" fits well. This asks for a phrase change.

After that, I doid a quick search inon the internet.

It would be best with you made a single sentence with the last one. But, you can write like this. Also, you are talking about the past. Use did, not do.

Well, my answer to you all,was: “Yes, it is free!”

Again, past tense.

But the fact that even no tuition requiretruth is that they don't require tuition.

This phrase is a lot awkward. It looks like you had something in mind, but didn't want to write it. Looks also very serious, like you doing a discourse on a funeral or something of the sort. Also, it is grammatically incorrect. Took me some time to build a better sentence.

Let me ask thone question in a not a -so -polite -manner.

This rule is very shady, so I don't expect you know either. "Not so polite manner" counts as a single noun, so you use hyphen to glue all the words. Helps to make the phrase more readable.

DoAre you think you are smart enough to complete a university degree in the Germany University?

I don't know Germany University or any university in Germany for that matter, but I know that you mentioned "Germany University" in your text before. So I believe you are talking about one, single university. In this case, you need to use the "the" article." The Germany University". If you are talking about any university in Germany, you need the use the article "a". "A German University". Because you didn't use the article, the text became ambiguous.

What do you think?

You are saying "what do you think?" Here. Don't need to put the idea here and the last sentence. Makes the text boring and you look unintelligent.