The next morning, Shen Sinning rubbed her sleepy eyes and came to the hall. "Yang Yu, good morning… you're up so early!"
Yang Yu actually hadn't slept all night, working overtime.
Shen Sinning thought he had woken up early, but he didn't explain and just smiled slightly, "Yes."
"Wow, what's all this!" Shen Sinning suddenly became fully awake, her face full of surprise, "Is all this for me?"
"Yes." Yang Yu fastened the sleeve arrow on Shen Sinning's arm, "This sleeve arrow is made entirely of non-metallic materials, and metal detectors can't detect it at all. Here, this is how you use it."
Yang Yu personally demonstrated how to use the sleeve arrow. With a "swoosh," a short arrow shot into the wall, sinking in three inches!
"This arrow is made of wood? How is that possible?" Shen Sinning's face was filled with disbelief, "How can such a small piece of wood shoot through a wall!"
