tasks = [
        "https://bj.lianjia.com/",
        "https://cd.lianjia.com/",
        "https://cq.lianjia.com/",
        "https://cs.lianjia.com/",
        "https://dl.lianjia.com/",
        "https://dg.lianjia.com/",
        "https://fs.lianjia.com/",
        "https://gz.lianjia.com/",
        "https://hz.lianjia.com/",
        "https://hui.lianjia.com/",
        "https://hf.lianjia.com/",
        "https://jn.lianjia.com/",
        "https://lf.lianjia.com/",
        "https://nj.lianjia.com/",
        "https://qd.lianjia.com/",
        "https://sh.lianjia.com/",
        "https://sz.lianjia.com/",
        "https://su.lianjia.com/",
        "https://sjz.lianjia.com/",
        "https://sy.lianjia.com/",
        "https://yt.lianjia.com/",
        "https://zs.lianjia.com/",
        "https://zh.lianjia.com/",
        "https://zz.lianjia.com/",
        "https://xm.lianjia.com/",
        "https://xa.lianjia.com/",
        "https://tj.lianjia.com/",
        "https://wh.lianjia.com/",
        "https://wx.lianjia.com/"
        ]