The main culprit was naturally Concubine Bai. What happened to them had taken place in the Hundred Flower Palace, and the one who had poisoned them was her personal maid. There was no way that woman was uninvolved.

Zu An was a bit hesitant. “How about we investigate them secretly first? We might startle them and scare them away if we go without any proof.”

The crown princess harrumphed. “An investigation requires proof. I’m not going there for an investigation, but rather to vent my anger!” She stormed out immediately after, and her personal maid Rong Mo quickly followed behind her. She also summoned some maids and servants to accompany them. Zu An quickly followed along.

“Big bro Zu, congratulations on your promotion,” Jiao Sigun and Piao Duandiao moved over and said happily.

“How about we celebrate this tonight at the government brothel?” Piao Duandiao suggested excitedly.

Zu An gave the black circles under Piao Duandiao’s eyes a look and couldn’t...