What are the four stories about family etiquette in ancient times?

The story about family etiquette is as follows:

1, Huang Xiang warm mat: tells the story of Huang Xiang fanning his parents' curtains in summer to make them sleep more comfortably; In the cold winter, I warmed my parents' bedding with my body.

2. Sleeping on the ice to find fish: tells the story of A Jin Wang Xiang fishing for his stepmother in winter, which is regarded as a classic of filial piety by later generations.

3, Kong Rong let pears: Tell the story that Kong Rong knew to send big pears to his brother when he was a child, and educate children to know how to abide by public order and good customs.

4. Taste the soup: tell the story of Emperor Wen's filial piety to his mother. During his mother's illness, Wendi personally fed his mother soup every day.

5. Bite your finger and feel sad: Tell me, I have served my mother with great filial piety. Once I went into the mountains to collect firewood, and there were guests at home. My mother was at a loss and bit her finger with her teeth.

6. Three Moves in Meng Mu: Monk's mother moved several times to choose a good environment to educate her children.

7. "Ceng Zi Kill the Pig": tells the story of Ceng Zi's teaching children to keep promises and be honest with others with his own actions.