They have this worry because they really don't know what other tricks An Jing may have up her sleeve to select them.
...
After breakfast, An Jing had the remaining eleven new recruits come to the chicken coop in the military camp.
All eleven recruits were puzzled as to why An Jing wanted them there.
An Jing said, "The soldiers in the military camp are always ready to charge and fight for the country. If you truly go to the battlefield one day, if you don't kill the enemy, the enemy will kill you."
"So," An Jing pointed to the chickens in the coop, "this is the final test I give you, killing a chicken."
After a pause, An Jing continued: "If you are afraid of killing even a chicken, how can you talk about killing enemies on the battlefield?"
Du Aya said, "I don't even know how many pigs I've killed, am I supposed to be afraid of killing a chicken?"
