Homophonic story: What do two people mean?

1. In the Qing Dynasty, Ji Xiaolan and Xiao Shenyang were both North Korean officials, Renji was an assistant minister (official name) and Xiao Shenyang was a minister (official name).

2. Once, when they were drinking together, Xiao Shenyang pointed to a dog and asked, "Is it a wolf or a dog?" It means "assistant minister is a dog".

3. Ji Xiaolan is very alert. Knowing that Xiao Shenyang was scolding himself, he quietly replied, "The dog is upright and the wolf is upright." . It means "Shangshu is a dog".

Shenyang tried to scold Ji Xiaolan with the homonym of "Wolf" and "Assistant Minister", but Ji Xiaolan hit him back with the homonym of "Shangshu" and "Shangshu".