This landscape painting by Ning Yeh was painted using Semi-Sized Xuan Paper.
This is an excellent all-purpose paper as it offers you the smoothness of xuan paper while still giving you the moisture control of a semi-sized paper. You can paint landscapes with washes and mists, flowers, birds, fruits, aquatic life, and so much more on this paper!
If you are a beginner, or have a background in western watercolor painting, this paper is an excellent starting point.