"peaches and plums are everywhere" means that there are many students everywhere. This sentence is a famous saying that the descendants of the Chinese nation praise teachers and students who have been trained in all aspects of the world through decades of teaching career.
From: Bai Juyi's Planting Flowers in the Green Field Hall in Gong Ling, Fenghe, Tang Dynasty.
Original text:
The green field hall occupies the splendor of things, and passers-by show you your home.
Your father is full of peaches and plums, so why plant a variety of flowers in front of the hall?
After the completion of the Green Field Hall, it occupied the essence of everything. Passers-by pointed to the house and said that it was Pei's home. Pei's students are all over the world. Where is it necessary to plant flowers in front of and behind the house?
Extended data:
The Green Field Hall is open, occupying the essence of everything. Passers-by said it was your father's home. Your father's students are all over the world. Why plant flowers in front of the house? This poem uses metonymic rhetoric, taking peaches and plums as students, and the Green Field Hall refers to the house name of Pei Du in Tang Dynasty.
This poem takes up the essence of everything by writing that Pei Du's house doesn't grow flowers (the house is conspicuous). It expresses praise for a teacher who is famous all over the world.
Baidu encyclopedia-peaches and plums all over the world