Thanks for the current response! Please read our bounty details in this thread, we are currently launching Chinese/Mandarin Translation only , cheers! 
I am interested in the Chinese translation task, but somehow confuse, how do I apply as the registration form looks like submitting finished work(s)?
Ans can I submit in pdf format for wp or medium article?
We have updated our instructions , you may refer over there for the steps to apply for the translation, and which contents you will like to translate. We will be shortlisting translation bounty participants weekly.
And yes you may, just provide us a URL link so that we can review them
