The two of them stood atop a sand dune a thousand meters away. Cheng Cao was holding an AWP sniper rifle and he aimed at a dead tree trunk a kilometer away.
"There's a full-speed southeast wind, wind force level 3, wind velocity at 6.5 meters per second, minute of angle is 7."
Beside Cheng Cao, Chen Chen reminded him. "After firing, don't look to see if you've made your shot. Turn your back and hide behind the sand dune at once. Got it?"
"Alright."
Although he did not quite understand Chen Chen's intentions, Cheng Cao still nodded without any comment.
Chen Chen put on a pair of sunglasses and only his head popped up from behind the sand dune. He prepared to duck. "Okay, you may fire!"
Chen Chen's behavior alarmed Cheng Cao a little. He knelt on top of the sand dune and aimed steadily at the pedant a thousand meters away.
"Bang!"
