Come morning, the mist condenses into drops on the edges of twig and leaf, which tinkle to the earth.

The volatile oil was extracted from Cinnamomum wilsonii leaf and twig with the steam distillation and the yield was 1.

The results are: 6 species diseases were found, including 3 leaf diseases, 1 twig disease, 1 trunk disease and 1 seedling disease;