From A Chinese Garden of Serenity (1959), by Hung Tzu-ch’eng, translated by Chao Tze-chiang:
When birds twitter to one another, their pleasure is mutual; when a flower grows on a twig, its fragrance can rise perpetually. Here we find the spirit of unity of one thing with another. When the view in a field is not interrupted even by a hillock, or when the light of the sky meets the water of the sea, there is the state of pervasion from above and below.