HELP with this sentence please!

[Unregistered]

I would appreciate your help, as I feel I should reword my sentence below, but I do not know how to...
The senetnce is:
When I studied Chinese in the ELTE Confucius Institute, I was good at pronouncing Chinese words completely unrecognizably to the native speaker.

I hope you understand what I want to convey in this sentence...:)

[TheParser]

I would appreciate your help, as I feel I should reword my sentence below, but I do not know how to...
The senetnce is:
When I studied Chinese in the ELTE Confucius Institute, I was good at pronouncing Chinese words completely unrecognizably to the native speaker.

I hope you understand what I want to convey in this sentence...:)

***NOT A TEACHER***(1) I really liked your question because I am studying Chinese on my own. (2) I think that your sentence is NOT expressing your thought. When I read your sentence, it gives me this idea: When I pronounce Chinese, native speakers have no idea of what I am saying. (3) I think you wish to say something like: At the ELTE Confucius Institute, I became so proficient that my pronunciation of Chinese cannot be distinguished from a native speaker's. (4) Hopefully, another poster can give you a better sentence. Thank you.

[TheParser]

***NOT A TEACHER***(1) I really liked your question because I am studying Chinese on my own. (2) I think that your sentence is NOT expressing your thought. When I read your sentence, it gives me this idea: When I pronounce Chinese, native speakers have no idea of what I am saying. (3) I think you wish to say something like: At the ELTE Confucius Institute, I became so proficient that my pronunciation of Chinese cannot be distinguished from a native speaker's. (4) Hopefully, another poster can give you a better sentence. Thank you.

I'm disappointed that no one else has replied yet. So may I offer another sentence: At the ELTE Confucius Institute, I learned Chinese so well that my pronunciation is the same as a native speaker's. Thank you.