string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%AD%E5%9B%BD%E5%85%81%E8%AE%B8%E6%95%B0%E5%AD%97%E8%B4%A7%E5%B8%81 => Failed to connect to 101.89.159.206 port 38075: Connection refused"
中国允许数字货币
