diff --git a/.gitignore b/.gitignore
index 909f6f5..4cc53a0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,4 @@
 .config.ini*
-data.db
 .idea/
 __pycache__/
-
+data/
diff --git a/Book.py b/Book.py
index f3403e2..c8b0612 100644
--- a/Book.py
+++ b/Book.py
@@ -1,4 +1,3 @@
-# from General import General
 import requests, time, datetime, json
 from bs4 import BeautifulSoup
 from configparser import ConfigParser
@@ -18,6 +17,11 @@ class Book:
     """
     @staticmethod
     def index(first, second=-1):
+        """
+        :param first:
+        :param second:
+        :return:
+        """
         if second == -1:
             if type(first) == str:
                 hash = cfg.get('Account', 'common_hash').split(',').index(first)
diff --git a/Crawl.py b/Crawl.py
index bd7dbbd..7e0e4f8 100644
--- a/Crawl.py
+++ b/Crawl.py
@@ -1,50 +1,2 @@
 from Manage import Manage
 from Book import Book
-import sqlite3
-
-
-class Crawl:
-    @staticmethod
-    def crawl_user():
-        a = Manage().login()
-        conn = sqlite3.connect('data.db')
-        c = conn.cursor()
-        for i in range(69, 2047):
-            info = a.query_info('user', page=i)
-            for elem in info:
-                sql = "insert into user(sid, cid, name, type, department) values ("
-                for field in elem:
-                    sql += "'" + elem[field] + "',"
-                sql = sql[:-1] + ')'
-                try:
-                    c.execute(sql)
-                except sqlite3.IntegrityError:
-                    print(sql)
-                except sqlite3.OperationalError:
-                    print(sql)
-            conn.commit()
-            print("第%d页完成爬取" % i)
-        conn.close()
-
-    @staticmethod
-    def crawl_book():
-        a = Manage().login()
-        conn = sqlite3.connect('data.db')
-        c = conn.cursor()
-        for i in range(3270, 4550):
-            info = a.query_info('book', page=i)
-            for elem in info:
-                sql = "insert into book(bid, sid, name, room, start, end, status, book_time) values ("
-                for field in elem:
-                    sql += "'" + elem[field] + "',"
-                sql = sql[:-1] + ')'
-                # print(elem)
-                try:
-                    c.execute(sql)
-                except sqlite3.IntegrityError:
-                    print(sql)
-                except sqlite3.OperationalError:
-                    print(sql)
-            conn.commit()
-            print("第%d页完成爬取" % i)
-        conn.close()
diff --git a/Init_DB.py b/Init_DB.py
deleted file mode 100644
index a8de4bc..0000000
--- a/Init_DB.py
+++ /dev/null
@@ -1,13 +0,0 @@
-import sqlite3
-
-if __name__ == '__main__':
-    conn = sqlite3.connect('data.db')
-    c = conn.cursor()
-    c.execute('''create table user
-        (id int auto increment primary key,
-	sid int(10),
-	cid int(10),
-	name varchar(10),
-	type varchar(10),
-	department varchar(10)
-);''')
\ No newline at end of file
diff --git a/Manage.py b/Manage.py
index a11dd01..bd6101e 100644
--- a/Manage.py
+++ b/Manage.py
@@ -3,6 +3,7 @@
 from configparser import ConfigParser
 from collections import OrderedDict
 from datetime import *
+import sqlite3
 
 cfg = ConfigParser()
 cfg.read('.config.ini')
@@ -118,6 +119,53 @@ def get_book_time(self, href):
         return string
 
 
+class Crawl:
+    @staticmethod
+    def crawl_user():
+        a = Manage().login()
+        conn = sqlite3.connect('data.db')
+        c = conn.cursor()
+        for i in range(69, 2047):
+            info = a.query_info('user', page=i)
+            for elem in info:
+                sql = "insert into user(sid, cid, name, type, department) values ("
+                for field in elem:
+                    sql += "'" + elem[field] + "',"
+                sql = sql[:-1] + ')'
+                try:
+                    c.execute(sql)
+                except sqlite3.IntegrityError:
+                    print(sql)
+                except sqlite3.OperationalError:
+                    print(sql)
+            conn.commit()
+            print("第%d页完成爬取" % i)
+        conn.close()
+
+    @staticmethod
+    def crawl_book():
+        a = Manage().login()
+        conn = sqlite3.connect('data.db')
+        c = conn.cursor()
+        for i in range(3270, 4550):
+            info = a.query_info('book', page=i)
+            for elem in info:
+                sql = "insert into book(bid, sid, name, room, start, end, status, book_time) values ("
+                for field in elem:
+                    sql += "'" + elem[field] + "',"
+                sql = sql[:-1] + ')'
+                # print(elem)
+                try:
+                    c.execute(sql)
+                except sqlite3.IntegrityError:
+                    print(sql)
+                except sqlite3.OperationalError:
+                    print(sql)
+            conn.commit()
+            print("第%d页完成爬取" % i)
+        conn.close()
+
+
 def rm_space(string):
     string = string.replace('\r', '').replace('\n', '').replace('\t', '').replace(' ', '')
     return string
@@ -125,10 +173,9 @@ def rm_space(string):
 
 if __name__ == '__main__':
     a = Manage().login()
-    a.del_book(1120153332, 0)
+    # a.del_book(1120153332, 0)
     # a.query_info('book')
-    '''
+    lst = cfg['Account']['commonu'].split(',')
     for sid in lst:
         n = a.del_renege(sid)
-        print("Delect %d logs of %d successfully" % (n, sid))
-    '''
+
diff --git a/README.md b/README.md
index 401a6bb..5effec6 100644
--- a/README.md
+++ b/README.md
@@ -1,43 +1,73 @@
-# LIT后花园观景台预约系统后台
+# 图书馆座位预约系统辅助工具
 
 ​	本系统由Defjia从2017.11开始开发，经过数次迭代和一次重构，这里是重构后的代码。
 
 [TOC]
 
-## 文件结构
- - Core Codes
-    - Book.py
-        - Book  (预约相关)
-            - login(self)
-            - prepare(self, room, seat, date)
-            - book(self)
-    - General.py
-        - General
-            通用的方法。
-    - Maintain.py
-        - 
-    - Manage.py  (包含后台操作，不对外公开)
-        - Manage
-            - login(self)
-            - query_info(self, action, student_id='', page=1)
-            -
-   
+## 代码结构
+- Book.py
+    - Book (预约相关)
+
+        - *index(first, second=-1)*
+
+            定位配置文件中的账号密码
+
+        - login(self)
+
+            CAS登录
+
+        - prepare(self, room, seat, date)
+
+            预约准备
+
+        - book(self)
+
+            预约
+- General.py
+    - General
+
+        通用的方法。
+- Maintain.py
+    - detect()
+
+      检测僵尸账号是否正常
+- Manage.py  (包含后台操作，不对外公开)
+    - Manage
+        - login(self)
+        - query_info(self, action, student_id='', page=1)
+        - del_renege(self, student_id)
+        - del_book(self, sid, date_delta)
+        - get_book_time(self, href)
+
+    - Crawl
+
+        爬取数据
+
+        - *crawl_user()*
+
+          爬取用户信息
+
+        - *crawl_book()*
+
+          爬取预约记录
+
+    - rm_space(string)
+
  ## 版本记录
- 
+
  ### 已修改内容
  - 修改文件结构。
  - Manage.del_reneges方法增加参数识别，方便切换删除账号的类别。
- - index方法修改为Book类的静态方法，可以通过拼音码(常用用户)、序号(僵尸账号)指定学号密码。
-          
+ - index方法修改为Book类的静态方法，可以通过拼音码(常用用户)、序号(僵尸账号)指定学号密码。       
  ### 待修改内容
- 
+
  #### 重要
  - 添加自动定时预约功能
  - 添加自动维护未签到座位功能
- 
+
  #### 一般
  - 增加关注座位入馆提醒功能
- 
+
  #### 不重要
  - 在config.ini中标注僵尸账号的可用性，以及修改相关方法。
  - 增加入馆时自动预约功能。
\ No newline at end of file
diff --git a/Time.py b/Time.py
index 8cba435..f33debd 100644
--- a/Time.py
+++ b/Time.py
@@ -1,5 +1,5 @@
-from datetime import datetime
-import time
+import datetime
+import time, requests
 
 
 class Time:
@@ -9,3 +9,17 @@ def wait_until(time_):
         It needs to be clarified that the time is that on remote server.
         :return: 0 -> time is up
         """
+
+    @staticmethod
+    def get_server_time(host):
+        r = requests.get(host)
+        _t = str(r.headers)[15:35]
+        t = datetime.datetime.strptime(_t, "%d %b %Y %H:%M:%S") + datetime.timedelta(hours=8)
+        return t
+
+
+if __name__ == '__main__':
+    host = 'http://seat.lib.bit.edu.cn'
+    res = Time()
+    r = res.get_server_time(host)
+    print(r)
diff --git a/init.sql b/init.sql
deleted file mode 100644
index 82fab78..0000000
--- a/init.sql
+++ /dev/null
@@ -1,20 +0,0 @@
-create table user(
-	id integer primary key autoincrement,
-	sid int(10) unique,
-	cid int(10) unique,
-	name varchar(10),
-	type varchar(10),
-	department varchar(10)
-);
-create table book(
-	id integer primary key autoincrement,
-	bid int(12),
-	sid int(10),
-	name varchar(10),
-	room varchar(20),
-	start timestamp,
-	end timestamp,
-	status varchar(10),
-	book_time timestamp,
-	note varchar
-);
diff --git a/test.py b/test.py
index afec421..fc45e38 100644
--- a/test.py
+++ b/test.py
@@ -1,20 +1,13 @@
 from Book import Book
 from Query import Query
+from Manage import Manage
 import time
 
 if __name__ == '__main__':
-    date = 1
+    date = 0
     cur = 0
     while True:
-        query = Query(date, 17)
-        res = query.get_list()
-        if res:
-            for elem in res:
-                account = Book(cur).login()
-                account.prepare(elem[0], elem[1], date)
-                account.book()
-                cur += 1
-        query = Query(date, 16)
+        query = Query(date, 311)
         res = query.get_list()
         if res:
             for elem in res:
@@ -23,3 +16,10 @@
                 account.book()
                 cur += 1
         time.sleep(1)
+    '''
+    a = Manage().login()
+    test = Book('ljq').login()
+    test = test.prepare(311, 2, 1)
+    a.del_book(1120132559, 1)
+    test.book()
+    '''
\ No newline at end of file