C17 Tracking

At the thought of this, Tang Xinyi's stubborn spirit suddenly rose. If he didn't let her interfere with his sister's matters, then his conscience wouldn't be able to bear it. That was his own biological sister. How could she die for no reason? No matter what, he had to find out the reason.

"Director Lih, if you know some clues, then please tell me. You know, this is very important to me