The fake death of the Xiao Family wasn't actually complicated.
She was already affected by a slow-acting poison, so they only needed to increase the dosage.
The Xiao Family was the maternal family of the Third Prince. At that time, the Emperor, while still a prince, was exceptionally wary of both the Second and Third Princes, naturally placing people in both families.
There was someone from the Emperor in the Xiao Family.
Originally, the Emperor didn't plan to use them, but now, to save the Xiao Family member, he had no choice but to activate them.
The Xiao Family member had long suspected that the slow-acting poison was placed in her daily tea, because she always felt nauseous at mealtimes, so putting it in food wasn't effective.
She often drank tea, so she seized an opportunity to accidentally spill tea on a handkerchief. Then, she handed it over to a servant placed by the Emperor in the Xiao Family, who took it out of the family to be examined by the Imperial Physician.
