An autumn palette at Tianping Mountain, Wuzhong district in Suzhou, Jiangsu province, East China. [Photo/Xinhua]

After exposure to frost and low temperatures, maple leaves in regions south of the Yangtze River are like bashful girls, gradually showing their beauty, turning from green to gold, gold to orange and finally to red. And as the process is slow, different colors are visible on the same trees called "colorful maple trees". Viewing at the mountainside is the best choice.

?Best time: October to November