Do you know Zhang Xueliang's calligraphy?

This is Zhang Xueliang's calligraphy, so you can see that Zhang Xueliang's character is unstable and erratic. From a loyal ally to inexplicable betrayal, he feels guilty. His heart is really tangled, and his calligraphy is still good. No one is perfect. This calligraphy is frank and fluent, much better than those so-called calligraphers.