Mengmeng and the others went downstairs and lined up separately by gender. The homeroom teacher then led everyone out of the school gate to plant trees behind the campus.
The holes for the trees had already been dug by workers in advance, so all everyone needed to do was plant the saplings, cover them with soil, and water them.
Therefore, it was extremely easy.
In no time, rows of saplings were planted.
After planting trees, there was another daunting task—removing weeds from the school's old sports field!
Under the scorching sun, the homeroom teacher was coming over with a stack of plastic bags, "Everybody come and get a bag. Today if anyone's weeds don't fill up this bag, they are not allowed back in the classroom for the lesson. They will have to brave the cold wind here and keep weeding until it's full, only then can you come back to class!"