Qiao Mo spoke again: "The soil outside the classroom window is slightly saline-alkaline. It's hard for other trees to survive, but white willows can thrive in saline conditions below 1.0% salinity, making it a common choice for greenery and protective forest belts, which is why the school planted them here."
"What does this have to do with you sabotaging Tingting's equestrian outfit? Don't change the subject!"
Qiao Mo smiled slightly, walked forward a few steps, stopped in front of Yu Xiaoqin, and stared at her: "When soil is too saline-alkaline, it forms a layer of white alkali. The soil appears gray-white mixed; it isn't obvious when wet, but once a shoe steps on it, it leaves a layer of alkali mud on the shoe when dry, making the surface yellow-white…"
