string(312) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%88%97%E5%AD%90%E8%BF%99%E6%9C%AC%E4%B9%A6%E7%9A%84%E5%AD%A6%E6%9C%AF%E8%A7%82%E7%82%B9%E5%B1%9E%E4%BA%8E%E4%BB%80%E4%B9%88%E5%AD%A6%E6%B4%BE => Failed to connect to 101.89.159.206 port 38100: Connection refused"
列子这本书的学术观点属于什么学派
