In which I begin to go off the deep end:
I just got a text message which said “我是老杨” ["I am Old Yang"] and nothing else. I don't know anyone in China with the last name Yang, no one in China has my cell phone number except Gus and my boss, and now I am worried that this is the beginning of some sort of obscure gangster move used to entrap and then rob and/or murder foreigners. China plays tricks with your miiiiind, man.
This is like that movie "One Missed Call", except actually this still makes more sense than that movie.