To recommend the version of Mandarin, we must first make clear the book Mandarin. Guoyu is a classic document in ancient China, which records the history of China's ancient politics, economy and culture, and is of great significance for understanding the ancient history and culture of China.

For modern readers, the choice of reading version of Mandarin mainly depends on their reading purpose and personal interest. Here are some versions that may be suitable for different readers:

1. Putonghua is compiled by the Institute of Ancient Books Compilation of Shanghai Normal University, Shanghai Ancient Books Publishing House, 1998. This edition has high academic value and is suitable for readers who study or teach Mandarin in depth.

2. Notes on Xu Yuan's Patent Collection of Qing Dynasty, China Language Collection collated by Wang Shumin and Shen Changyun, Zhonghua Book Company, 2002. This edition is well-known in academic circles and of high academic value, and is suitable for readers who are engaged in in in-depth research or teaching of Putonghua.

3. Qing Dynasty Dong Zengling's Justice in Mandarin, Bashu Publishing House, 1985. This edition also has a certain influence in academic circles and is suitable for readers who have in-depth research on Guoyu.

In addition, there are official versions of other publishing houses, such as Zhonghua Book Company, Shanghai Ancient Books Publishing House and Yuelu Bookstore. These versions also have different characteristics, advantages and disadvantages, and readers can choose according to their own needs and interests.

In short, which version of Mandarin to choose depends on the reader's reading purpose, interest and knowledge background. I hope the above recommended version can help readers find suitable reading materials.