```
"Is that so?" Liu Si frowned.
"Yes!" Li Shan nodded.
"Then we must investigate this thoroughly!" Liu Si spoke earnestly, "Based on what I know about Leopard, he definitely wouldn't make a big move just for someone insignificant. So, Xiao Han must be an important person to Leopard. Yet, Xiao Han is just a high school student, so what could be the connection between him and Leopard?"
"Now that you mention it, I'm actually starting to feel something off too!" As Li Shan heard this, his expression turned grave. He hadn't thought deeply about it before, but now that he considered it, indeed, something seemed amiss.
"Therefore, you must make sure to investigate this matter thoroughly!" Liu Si looked solemnly at Li Shan and said, "Moreover, you need to handle this personally. Don't alert anyone, understand?"
"Yes!" Li Shan immediately nodded.