translation.en: Within two years of having this forest in our backyard, I could observe that the groundwater didn't dry during summers, the number of bird species I spotted in this area doubled.
translation.zh: 2年了，有了这个森林在我们的后院。 在夏天时我可以观察到， 地下水并没有干涸。 我观察到鸟类在这个区域， 数量翻了一倍。