Osmanthus fragrans

Osmanthus fragrans (桂花), also known as  Sweet Olive, Tea Olive and Fragrant Olive, since it grows upon a great Tree, whose Leaves are like those of the Laurel.

The Flowers are small, and yellow, and grow in tufts , they soon fell off the Tree, and then others succeed. In autumn this tree is full of flowers, whose smell is so agreeable that the whole country is perfumed therewith. 

The flowers are used to make scented tea, jam, sweet cakes, and even liquor.

In south China, the fimous city Qui ling (桂林), signifies a Forest of the Flowers of Quei, they being more numerous in this city than in any other.
Guihua, Osmanthus fragrans