WHAT WOULD BE THE FINES AND PENALTY FOR OVERSTAYING 3 DAYS ON A 30 DAYS VISA?

Hello! I have a U.S passport and have a 30 days visiting tourist visa for China. I have been here for 28 days and lost my wallet two days ago. My relative is sending me money in 3 days through Western Union on Monday to pay my outstanding bills here as well as getting the airticket for me to leave China. By the time I get all these things done, I would have overstayed for 3 days in China. Would it hurt my chance of getting visa back to China in 3 months from now even if I would to pay all the fines and penalty when I leave here.