Huanhai zhinan 宦海指南, also called Libu chengjing wu zhong 吏部呈敬五種, is a collection of handbooks for district magistrates compiled by Xu Naipu 許乃普 (1787-1866), courtesy name Zhenxi 貞錫, style Diansheng 滇生, from Qiantang 錢塘 near Hangzhou 杭州, Zhejiang. Xu's highest office was Minister of Personnel (libu shangshu 吏部尚書). He was famous for his calligraphies.
| (Qing) 許乃普 Xu Naipu (comp.) 1859 edition of Master Xu from Qiantang 錢塘許氏(許乃普) | ||
| 書名, length in juan | Title | Author(s) | 
| (欽頒)州縣事宜 一卷 | (Qinban) Zhouxian shiyi | (Qing) 愛新覺羅胤禎 Aisin Gioro In Jen (Kangxi Emperor) imp. ord.; 田文鏡 Tian Wenijng, 李衛 Li Wei | 
| 州縣須知 一卷 | Zhouxian xuzhi | (Qing) 劉衡 Liu Heng | 
| 佐治藥言 一卷 續 一卷 | Zuozhi yaoyan Xu | (Qing) 王輝祖 Wang Huizu | 
| 學治臆說 二卷 續說 一卷 | Xuezhi yishuo Yushuo | (Qing) 王輝祖 Wang Huizi | 
| 折獄便覽 一卷 續說 一卷 | Zheyu bianlan Xushuo | (Qing) NN |