"Father Emperor? Are you suspecting that Yu Yan wants to harm you? How could that be possible! Your son knows that you have been poisoned again and are frightened, but as the Son of Heaven of a nation, there are always those with sinister intentions who want to harm you. However, Yu Yan has always been deeply filial, and these past days he has been tirelessly working for the safety of the Traveling Palace, practically without sleep. Your son even feels relieved that last night, for the sake of your safety, Yu Yan personally patrolled the area, otherwise..."
Murong Jiu's tone was sorrowful; she could not cry, but she could speak out about the possible dangers the Emperor could face and help sort things out for him.
The poison the Emperor was suffering from came from a slow-acting poison powder from the Western Regions. It was only because he had been overcome with anger that the poison manifested. Otherwise, it would not have been easy to detect.