Who delivered the speech "Serving the People" at the meeting for whom the Central Guard Corps observed silence? What is Cao Zhi's poem questioning his brother's hard struggle?

2. Cao Zhi's seven-step poem

Boiled beans are used as soup and fermented into juice. Honey burns under the pot, and beans cry in the pot. We are born from the same root, so why rush to speculate with each other?

Popular version: Boil beans and burn beans, and the beans cry in the kettle. We are born from the same root, so why rush to speculate with each other?