There is a line "A Dou surname" in the legend of Wulin. Which episode is that?

Episode 13: Fight for self-esteem, be a writer, solve the crisis for Yu Xiang and set the overall situation.

Bai Zhantang's hand was injured, and Tong's shopkeeper took good care of it. He also carefully brought a joke and read it with him. The bursts of laughter upstairs made Guo and the scholar miserable, so he also laughed and wanted to compete with the upstairs, but his big mouth did not know why, and he laughed wildly and was teased by Guo and the scholar, hurting his self-esteem. After several times of bullying, his big mouth finally got angry and yelled-I can't read, who am I afraid of? ...

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13'04

Laobai brought a book to Dazui ~

Mouth: Hey, Xu Shui, I know there is a Song Wu in it.

Laobai: What' water promise', Water Margin!

Mouth: I don't know the Water Margin yet ~ The name Water Margin is just like the names Song Jiangzi, Gong Ming and Timely Rain. I don't know why.

Laobai: OK, OK, just read it according to Xu Shui. Just press Xu Shui to read it. And this.

Mouth: Hey, The Journey to the West, do you know what happened to Monkey King Thrice Defeats the Skeleton Demon for the first time?

Laobai: ...

Mouth: I don't know if you ask me. It's all about learning.

Laobai: No way. Do you really want to teach them a lesson with this?

Mouth: So what?

Laobai: You are not the only one who has seen this Journey to the West.

Mouth: Then, then ... Do you have any other books?

Laobai: You, you big mouth, you really can't help yourself, Dou, you!

Mouth: Fight? Looks like a character ... where?

Laobai: In Water Margin, there are one hundred bachelors and nine generals.

Mouth: No culture, it's not ~ There are only 108 generals in the room, how can there be 109 generals in the future ~ You have to say that I still believe what is in the room.

Laobai: Hey ~ You're right this time. That's Liu Bei's son.

Mouth: Go ~ You fooled me again. Liu Bei's surname is Liu, and his surname is Ah. How can they be family? I said, in vain, you can't be like a scholar. You always cheat me! You should respect people, you know!

Laobai: Big mouth, big mouth, if I die one day, you will make me angry.

Mouth: What's wrong with me?

Laobai: Well, it's true. Take it out and disappear in front of my eyes!