这是一本比较难读的书,但是很有用。因为它介绍了最主要中国旅游城市和景点,还有一些中国重要的历史。 This book is difficult for HSK4 level to read, but it’s very useful and helpful. Because it introduces cities in China which have important views and history.Free loading code.( you need to have baidu cloud drive)