If there are not enough bushes, the empty valley will be fragrant for whom. It's cold all the way, and the fragrance is overflowing. Explain?

Leng Yun color all the way, full of Lin Qiuxiang.

-Yuan. Jess's Autumn Fair

This is a poem describing orchids, saying that orchids grow less than a full foot in the valley, and I don't know who bloom is swaying for. In late autumn, the whole valley and forest are full of fragrance.