The world's stick insects are divided into five families with more than 300 genera and 3,000 species; China is home to more than 300 species of stick insects from 4 families. Southeastern Asia has the most abundant number of stick insect species in the world. Many species are large in size, have an exaggerated appearance, strange colors, and are high in ornamental value. Insect lovers and collectors often aspire to obtain them.