三北防護林

1. • Green Wall of China, a massive afforestation program on the eastern margin of the Gobi Desert aimed at stopping the desert's expansion, started in 1978 and planned to be completed by 2050

Character by character

• 三(sān)surname San
• 北(běi)north
• 防(fáng)protect
• 護(hù)protect
• 林(lín)surname Lin