Place it just before the swarm or boss fight begins, after Enemy Spotted flags the first threat and before the FNAF Jumpscare Scream hits when the attack lands, keeping the warning in the middle of the escalation.
关于此声音
This is a short spoken warning, just over two seconds long, centred on the line 'We've awoken the hive.' It carries the feeling of a quiet plan going wrong in an instant, tense, alert and slightly panicked, as if everyone listening has just realised they are no longer alone. That sudden alarm makes it land as a warning, not a joke.