```
After observing, Wu Gang found that Lew Sen's left kidney had been removed, leaving a scar about ten centimeters long.
It felt as if, before the removal, the left kidney had been stabbed with a sharp instrument.
A veteran of ten years with a removed kidney, Wu Gang vaguely guessed something and revealed a bitter smile at the corner of his mouth.
To serve as a soldier for ten years, no matter the experience or rank, would certainly be quite high, and under such circumstances, one would not choose to retire without some compelling reasons.
Dispersing the random thoughts in his mind, Wu Gang saw that it was nearly lunchtime and, after some thought, made a call to Zeng Yu.
"Little Yu!"
As soon as the call connected, Wu Gang cheerfully asked, "Have you gotten off work?"
"Not yet, there's been a lot of work at the unit these days, and I still have much to finish!" Zeng Yu pouted and replied with a hint of frustration.