I am Kai Wang, currently a KIAA fellow at the Kavli Institute of Astronomy and Astrophysics at Peking University. I am interested in the galaxy-halo connection. This is a very broad topic and I have been exploring + the technique to identify galaxy groups and protoclusters in galaxy surveys; + the technique to measure halo mass using weak gravitational lensing; + how to connect galaxies across cosmic time leveraging the galaxy-halo connection at different redshift; + how the quenching of central galaxies is related to large-scale structures and halo assembly histories; + how the chemical properties of galaxies are affected by their environment; + the environmental quenching of satellite galaxy and its dependence on stellar mass; Most of my research works are based on public catalogs from galaxy surveys and simulations. And I have no experience in dealing with raw observational data(, at least until May 17 2023 when I am writing this). I am also looking for my second post-doc position (my current contract is expected to be terminated before Jul. 2024). If you have some position suitable for me, please do not hesitate to contact me. Last but not least, wish you a good day!