Why can't evil life trigger stealth missions?

The reasons why evil life cannot trigger stealth missions are as follows:

1, yoyo was not found on the first day, which made the evil life unable to trigger the stealth mission, and needed perfume and camera.

2, the player's own goodwill does not meet the requirements, resulting in evil life can not trigger stealth missions.

3.yoyo's late-night needs are not met, which leads to the bad life of not being able to trigger stealth missions.

4. Failing to complete the task according to the requirements, resulting in that the evil life cannot trigger the stealth task.