The First Slope of Spring in the World [Farming] GL MTL

Full Synopsis

Su Beigu was frail and sick since he was a child. He was sent to a Taoist temple to become a monk and practice spiritual cultivation. When he was eighteen years old, he was suddenly called home by a letter from home... to marry his brother? !
It turns out that her brother ran away before the marriage, making her fiancée Tan Ruyi the laughing stock of all over the country. She had no choice but to change her wedding clothes, welcome the bride, pay homage to the high hall, and enter the cave - 

Su Beigu: This is the only one that won't work!

Tan Ruyi: You can't? I do not believe.
Su Beigu:...
*

Su Beigu thought that after Tan Ruyi married into the Su family, she would become a harem who stayed alone in her empty house. Unexpectedly, she was busy with work and feeding her sister-in-law every day (no), and she was as happy as if she had lost her husband.

Tan Ruyi: So I haven't lost my husband yet?
Su Beigu:?
--

Su Beigu thought he was on the road to cultivating immortality, but he unexpectedly became famous and became the most famous agriculturist in all his villages.
Many years later, when someone asked her how she got on this path, she pondered for a long time and said: "Everything has to start when I use the formation to extract fertilizer..."

 The world said: "?