The proverbs about swallows are as follows:

1. Swallows return to their nests to welcome the warmth of spring.

2. Swallows in pairs make a happy marriage.

3. Swallows know the ambition of a swan.

4. The sparrow is in the hall, and the phoenix is in the cage.

5. Although the swallow is small, it has all five internal organs.

6. Swallows fly by and spring comes.

7. When the swallow comes, the magpie will know.

8. Swallows nest deep and fish swim to the bottom.

9. Swallows never tire of ten miles in spring.

1. Swallows nod and purple flowers bloom.

11. Swallows hold mud, and trees rise.

12. One swallow does not make summer, and a hundred swallows make the Milky Way clear.

13. There are flowers in spring, a moon in autumn, a cool breeze in summer and snow in winter. If you don't mind your own business, it is a good season on earth (from Su Shi's Red Cliff Fu).

14. I know from a distance that it is not snow, because there is a faint fragrance coming, so I cry and mourn alone, and the swallows are surrounded. (from Untitled by Li Shangyin in Tang Dynasty)

15. Swallows know that spring is the absolute value after dormancy. (From Li Ang's poetry collection "Overseas Appearance")