三北防护林 (三北防護林) sān běi fánghù lín

sān běi fánghù lín proper noun Green Wall of China
Domain: Government 政府 , Subdomain: China
Notes: 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 (CC-CEDICT '三北防護林')