When? Where? What's wrong with you that you can't tell which Beijinger ads are written by Chinese agents? You might have better luck if you post under roommate requested there; if you seem normal there will be people looking. I tricked someone into believing I was normal and it worked well for me.
July 3 - September 4 In the East, preferably 2nd or 3rd Ring Road, within cycling distance of Ritan Park. I will also post in the roommate requested section, thanks for the tip. Still, maybe someone on here has, or knows someone who has an idea.