Has he been poisoned?

The next morning, Gabriel Chen , who had been guarding Celeste Ye bed, fell asleep and felt someone touching his ears. When he woke up, he saw Celeste lying on her side with her head resting on her head. Her pretty face had regained its color and she showed a gentle smile.
Her beautiful eyes, which had regained their spirit, were staring at the man intently. When she saw Gabriel Chen open his eyes, she immediately withdrew her hands, closed her eyes, and pretended to sleep...
"I saw it all."
Gabriel...