There was some inconsistent information regarding how many books there were in Joy of Life. Some documents mentioned that there were 12 volumes in total, while others mentioned that there were 15 volumes. Among them, the People's Literature Press published the first five volumes of the revised edition. The Taiwan edition was divided into three volumes and a total of 12 volumes. However, there was no clear information on whether the second half of the book was published or not. Therefore, it was impossible to determine how many books there were in Joy of Life.

There were some uncertainties and contradictions about how many books there were in the book. Some documents mentioned that there were 12 volumes in total, while others mentioned that there were 15 volumes. However, according to the contents of document [1], document [2], document [6], and document [7], it can be concluded that there are a total of seven volumes of "Celebrating Years" novels.
There was some inconsistent information regarding the number of copies of Joy of Life. Some documents mentioned that there were 12 volumes in total, while others mentioned that there were 15 volumes. However, according to the content of document [1], there were seven books in Joy of Life. Therefore, based on the information provided, it was impossible to determine the exact number of copies.
There was some inconsistent information regarding the number of books in Joy of Life. Some documents mentioned that there were 12 volumes in total, while others mentioned that there were 15 volumes. Among them, the People's Literature Press published the first five volumes of the revised edition. The Taiwan edition was divided into three volumes and a total of 12 volumes. However, due to the closure of the publishing house, only six books were actually published. Therefore, the exact number of copies was still uncertain.
There was some inconsistent information regarding how many books Joy of Life had. Some documents mentioned that there were 12 volumes in total, while others mentioned that there were 15 volumes. Among them, the People's Literature Press published the first five volumes of the revised edition. The Taiwan edition was divided into three volumes and a total of 12 volumes. However, due to the closure of the publishing house, only six books were actually published. Therefore, it was impossible to determine the exact number of copies of Joy of Life.
There was some inconsistent information about how many books there were in Celebrating Years. Some documents mentioned that there were 12 volumes in total, while others mentioned that there were 15 volumes. Among them, the People's Literature Press published the first five volumes of the revised edition. The Taiwan edition was divided into three volumes and a total of 12 volumes. However, due to the closure of the publishing house, only six books were actually published. Therefore, it was impossible to determine the exact number of copies of the novel "Celebrating Years".
According to the information provided, there was some inconsistent information about how many books there were in Joy of Life. Some mentioned seven volumes, some mentioned twelve, and some mentioned fifteen. However, based on the contents of documents [2],[3],[6],[7], and [8], it can be concluded that there are a total of seven books in Joy of Life.
There was some inconsistent information regarding the number of books in Joy of Life. Some documents mentioned that there were 12 volumes in total, while others mentioned that there were 15 volumes. Among them, the People's Literature Press published the first five volumes of the revised edition. The Taiwan edition was divided into three volumes and a total of 12 volumes. The current search results did not provide a clear answer. Therefore, it was impossible to determine how many books Joy of Life had.
There was some inconsistent information regarding the number of copies of Joy of Life. Some documents mentioned that there were 12 volumes in total, while others mentioned that there were 15 volumes. However, based on the information provided, the exact number of copies could not be determined. Therefore, there was no definite answer to the question of how many books there were in Joy of Life.
There were a total of four volumes of "Celebrating Years", namely "Celebrating Years·Volume 1","Celebrating Years·Volume 2","Celebrating Years·Volume 3" and "Celebrating Years·Volume 4".
There was some inconsistent information regarding how many books Joy of Life had. Some mentioned seven volumes, some mentioned 15, and some mentioned 12. However, according to the contents of documents [2] and [6], there are seven books in Joy of Life.
Joy of Life had four volumes, which were Joy of Life Volume One, Joy of Life Volume Two, Joy of Life Volume Three, and Joy of Life Volume Four.