Before the apocalypse, Xu Xiaojun worked at a small, remote factory, where his whole family lived.
At that time, he happened to be on break, they were all home when the virus suddenly broke out. His parents died at the hands of zombies while protecting him, and he survived. With nowhere to go, he returned to the small factory.
This small factory didn't have many people, but it was spacious and had some food, so during the virus outbreak, it was relatively safe.
Later, due to the large number of wandering zombies, the small factory became untenable, so he was forced to leave. At that time, he should still be in the factory.
As for Yang Changhong, she was a company boss before the apocalypse, and organized her employees to resist after it started. Having survived the initial crisis, she should now be in her office building.
Wang Tao should be able to find them if he goes to the factory and the office building.
