The seven-color soil refers to a soil on the hillside of Heihe Mountain with seven different colors. It stands on the observation deck and overlooks the seven-color soil. The colors such as pink, light purple, deep purple, light blue and brown are intertwined. Together, like a visual feast. The vegetation around the seven-colored soil is lush, but the seven-color soil is not a grass. The strip of colored earth is like a stream of colored streams flowing into the forest.