Du Yuan was on a secret mission, and was about to leave his family. It was hard to say if he would ever return. Hence, he specially took leave to accompany his family for a period of time.
Perhaps this was also their last period of time.
However, when Du Yuan went out in the streets alone to buy something today, he realized that something was amiss. The originally bustling streets seemed to have fallen silent all of a sudden, as if he was the only one in the entire world.
As a security personnel who underwent secret training, Du Yuan was very vigilant. He had even undergone genetic enhancement before. Although it was impossible for him to be enhanced too much, he had actually reached the level of one life transition by the standards of a cultivator.
It was only then that he was qualified to carry out that highly anticipated secret mission.