塞外

sài wài lǜ zhōu

塞外绿洲

the oasis in the north of the Great Wall

sài wài měi jǐng

塞外美景

northern-frontier scenery

zhè ge chéng zhèn shì tōng xiàng sài wài de jiāo tōng shū niǔ

这个城镇是通向塞外的交通枢纽。

This town is a transportation hub leading to the Great Wall.