I forgot the title but there’s this situation where the empress made the Female Protagonist drink a soup that contains posion with ‘Gu’ so that she could control her. Then the cold Male Lead worries about her since she haven’t woken up for days but in truth she’s just studying Gu in her ‘dimension’ hidden space or something.
I had to click to realize you were saying female lead, I was here wondering how tf Florida in ancient times was poisoned.