Gu Yong
Lü Yi's abuses of power finally came to an end in 238 when Sun Quan learnt the truth about him and understood the gravity of the situation. After removing Lü Yi from office, Sun Quan had him imprisoned under the watch of the Ministry of Justice, and then ordered Gu Yong to conduct an investigation. While interrogating Lü Yi, Gu Yong maintained his composure and performed his job professionally. Before Lü Yi was escorted out, Gu Yong asked him, "Do you have anything else to say?" Lü Yi kowtowed and remained silent. When another official Huai Xu () started scolding Lü Yi, Gu Yong sternly rebuked Huai Xu: "As government officials, we should follow the laws. Why must you do this?"