According to Mom, there's indeed something inside Hao Meili's body. This thing won't harm him for now, but it's not impossible for it to cause harm. It likely needs a specific trigger for something to happen.
That's why Mom gave him something for self-defense, just in case. However, he feels something's not right, because given his parents' usual concern for him, this shouldn't be the only safeguard they provide.
After all, he rarely saw Mom being so solemn. When she is, it means the situation has exceeded her initial expectations. This suggests that someone might be secretly protecting him as well.
Luo Yirui has never doubted the love and care from his parents. Thus, he deduces that someone must be protecting him secretly, and this person should be Dad's contact!
This reminded him of that first night he contacted his dad, the person who appeared in the darkness.
However, he's not very sure if it's the same group of people.
