On the second day of disappearance, at 11 p.m., Zhangjia Villa, Zhang Kaicheng's younger brother was just about to close the curtain. A bullet penetrated the glass and hit him on the forehead, revealing a blood hole on his forehead.

"Putong!"

He fell to the ground, dead.

In the early morning of the third day, the only remaining elder brother of the Du brothers died in his bedroom, his throat was cut off with steel wire and he died in bed.

The upper circle of Shanghai was panicked, and no clue was found about the murderer. The murderer disappeared without trace, like a ghost, and disappeared quickly after killing.

Anyone...