The Card Line is the most beautiful scenery in northern Hulunbuir.

The Card Line, from Shiwei to Eerguna City, passes through Jiuka, Baka, and Qiuka, and is considered the most beautiful scenery in northern Hulunbuir. Card means sentry post, formerly known as Kalun. After the Treaty of Nerchinsk, the Qing government set up Kalun along the riverbank and stationed troops to graze there. Today, except for the barbed wire, the sentry post is not very strong, but the scenery on both sides of the river is endless, with forests, lakes, hills, grasslands, meadows, wildflowers, cattle, and sheep. The wilderness is boundless, the sky is full of changing clouds, and the light and shadow are just right. The mountains are high, and the water is long, which is very beautiful.