On June 8, 2007, the online edition of Science magazine published the research paper "Asymmetric mating interaction drives extensive invariance and displacement in sandflies" by Professor Liu Shusheng of Agricultural College of Zhejiang University. This is the first time that Zhejiang University has published a paper in Science as the first author and the first unit since the founding of the People's Republic of China. In this paper, the invasion mechanism of Bemisia tabaci B is studied. Bemisia tabaci B is the only insect named "super pest" in the history of science and technology, and it has rapidly invaded all over the world. They eat tomatoes, tobacco, cotton and other important cash crops in large quantities, spread geminiviruses, cause the spread of plant virus diseases, replace harmless native Bemisia tabaci, lead to the extinction of local organisms, cause serious yield reduction and crop failure, and seriously endanger the sustainable development of planting industry and food safety. The research team led by Professor Liu Shusheng conducted a systematic field sampling survey in more than 40 locations in Zhejiang, China and Queensland, Australia from June 438 to September 95, 2006. A unique video system was designed to observe and analyze the mating behavior of Bemisia tabaci. It is found that "asymmetric mating interaction" is a key mechanism of Bemisia tabaci invasion: when the invasive Bemisia tabaci and local Bemisia tabaci exist, female and male adults mate more frequently, the fertilization rate of eggs increases and more female offspring are born. In addition, although male Bemisia tabaci do not mate with female Bemisia tabaci, their courtship with female Bemisia tabaci interferes with the mating between male Bemisia tabaci and female Bemisia tabaci. Because this effect is beneficial to one side and harmful to the other, the paper review experts in Science magazine called "asymmetric mating interaction" think that the design is ingenious and the data system is complete, which is rare in the field of invasive biology research, and the conclusion is convincing. This achievement provides an important theoretical basis for explaining the phenomenon and law of widespread invasion and replacement of native Bemisia tabaci by this pest, as well as early warning of its further invasion and regional expansion, and will also be inspired in entomology, agronomy, animal behavior, evolutionary biology and other disciplines.