Legal analysis: should be in the evening of the 23rd before 24:00 reply, reply letter is the organs, units in the daily official contact often use a kind of official letter, is the organs, units in reply to the letter on the one hand negotiation, inquiries or contact with the use of a kind of official documents, can be used for the superior organs of the lower units of the reply, can also be used for parallel organs or not subordinate to the organs of the reply. The higher authorities to the lower organs of the matters requested by the reply to the letter of reply at the same time has some kind of approval, the nature of the instructions.
Legal basis: "Regulations on Letters and Visits"
Article 2 The term "letters and visits" refers to the activities of citizens, legal persons or other organizations in the form of letters, e-mails, facsimiles, telephone calls and visits to the people's governments at all levels, the people's governments at or above the county level to reflect the situation, put forward suggestions, opinions or complaints, which are handled by the relevant administrative organs in accordance with the law. The form of the preceding paragraph, reflect the situation, put forward suggestions, opinions or complaints request citizens, legal persons or other organizations, called the petitioner.
Article 32 The administrative organ authorized to deal with a petition shall, after investigation and verification, make the following decisions in accordance with the relevant laws, regulations, rules and other relevant provisions, and reply to the petitioner in writing:
(1) If the request is clear and in conformity with the laws, regulations, rules and other relevant provisions, it shall be supported;
(2) If the request is reasonable and lacks a legal basis, it shall be supported;
(2) if it is reasonable and lacks a legal basis, it shall be supported. But the lack of legal basis, the petitioner shall do a good job of explaining the work;
(3) the request lacks factual basis or does not comply with the laws, rules and regulations, or other relevant provisions, will not be supported.
Administrative organs with the authority to deal with the request for a petition in accordance with the provisions of the preceding paragraph (a) to support the views of the petitioner, shall supervise the implementation of the relevant organs or units.