':return: äžæ æææç« ïŒè¿åçæåš
:rtype: Post.Iterable'

@property
def posts(self):

    origin_host = self._session.headers.get('Host')
    for offset in range(0, (((self.post_num - 1) // 10) + 1)):
        self._session.headers.update(Host='zhuanlan.zhihu.com')
        res = self._session.get(Column_Posts_Data.format(self._in_name, (offset * 10)))
        soup = res.json()
        self._session.headers.update(Host=origin_host)
        for post in soup:
            (yield self._parse_post_data(post))
