  This technical report attempts to provide efficient and solid kits addressed
on the field of crowd counting, which is denoted as Crowd Counting Code
Framework (C$^3$F). The contributions of C$^3$F are in three folds: 1) Some
solid baseline networks are presented, which have achieved the
state-of-the-arts. 2) Some flexible parameter setting strategies are provided
to further promote the performance. 3) A powerful log system is developed to
record the experiment process, which can enhance the reproducibility of each
experiment. Our code is made publicly available at
\url{https://github.com/gjy3035/C-3-Framework}. Furthermore, we also post a
Chinese blog\footnote{\url{https://zhuanlan.zhihu.com/p/65650998}} to describe
the details and insights of crowd counting.
