Anning was actually conscious.
She carefully calculated the time and place to slice her wrists; she chose a spot that bleeds a lot but is easily stopped.
Song Ruyi's bodyguards have basic first aid knowledge, and someone quickly helped Anning stop the bleeding, and another bodyguard called for emergency services.
When Song Ruyi shouted, it shocked Mr. Liu and Mrs. Liu who were outside talking to the driver and searching for keys inside the house.
They thought something happened and hurried over.
By the time they saw the room restored to its original state, the torn and tattered clothes on Anning, and the fresh blood covering her, they were both stunned.
Immediately after, they were overwhelmed with rage.
Had Song Ruyi not been standing nearby, it's uncertain whether Mr. Liu and Mrs. Liu might have physically attacked Anning regardless of gender.
Anning was fully aware of everything happening around her.