Li Xiaohui's social relationships are quite complex, and he knows many people. Recently, he has been asking around about Heipi, and surprisingly, he did manage to dig up some information from someone.
This person used to hang out with Heipi, and they were close. Before Heipi got into trouble, he entrusted him with a small notebook that only had a phone number written on it.
Heipi didn't mention what this notebook was for, he just asked him to keep it safe.
When Li Xiaohui got this notebook and saw the phone number, his intuition told him that this phone number might be related to Heipi's death, so he tried everything to find out the name of the phone number's owner.
In today's society, as long as you have money, checking this kind of thing is a piece of cake. Li Xiaohui found out the name of the owner was Xin Ling, so he went to great lengths to find Xin Ling.
