C721 Difficult Becomes Easy

Leng Yueling smiled and said, "That's right. To us, it is indeed useless. But naturally, it is not trash. It can still protect the forest from sand. It can still store water and soil, turning the land into an oasis, and still stop the process of the desert. "

Tuoba Tian'er sneered and said, "Even if that is the case, so what? It was not easy to leave behind some useless trees