what does "smile indefinitely" mean?

[Infin1ty]

Hi,

I'd like to know what "smile idenfinitely" means, and what does the whole sentence mean:

I was smiling indefinitely to pursue looking back.

Thanks in advance.

Edit: I did some researches and found out that the sentence was written by a Chinese. I'm not sure if it make any sense to you then.
http://www.tradeask.com/article/beatieng/464312.html
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Please feel free to correct me if you find any mistakes in my posts.

[Mister Micawber]

No, it does not make sense to me at all, sorry. In fact, I understand very little of that poem or whatever it is.
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Native English teacher at Mister Micawber's

[Infin1ty]

Thanks all the same, Mr. Micawber.
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Please feel free to correct me if you find any mistakes in my posts.