Live or die.
This choice is as difficult as ascending to the heavens, and as easy as flipping one's hand.
If Yan Fei had continued to let them live a life where each day was not guaranteed, perhaps some of them would have crumbled, while others would have become even more resolved in their beliefs. But after enduring hardship and personally participating in the establishment of the base, they had fought hard for a relatively stable life. Now, making a choice had become much easier for them.
Xiaohei still flew about in the city, occasionally returning to see if those people had provided any new information.
The laboratory was different from the ranch, and Yan Fei felt he needed to be more careful and make thorough inquiries. After all, this was delicate work, involving instruments he didn't understand. What if he brought them home only to find out he was missing something essential and couldn't use them? That would be a real loss, wouldn't it?