Chapter 16 is a long night, published by Yunnan People's Publishing House on June 20 17. The author is Zijin Chen, the third part of the trilogy of "social school" reasoning works (Crime without a license, Bad boy and Long Night). According to the relevant plot, it is difficult to know that Ding killed Hou Guiping in Chapter 16. Zi Gina, a famous writer of suspense and mystery novels, is well known to many readers for his original novel Crime with High IQ.