李泽峰博士目前于杜伦大学从事博士后研究工作。他2017年本科毕业于北京大学，2023年博士毕业于澳大利亚国立大学。他主要利用观测和数值模拟，研究星际介质物理和化学性质以及星系形成与演化等课题。Integrated field unit (IFU) spectroscopy provides a unique window to explore gas-phase oxygen abundances in the interstellar medium (ISM) of galaxies in the local Universe. Two-point correlations are one of the next-generation methodologies proposed to extract new information on ISM diffusion from metal fields inside galaxies. I will present two-point correlation analyses using CALIFA and MUSE that show this approach is robust across local different datasets and can be a powerful tool to investigate the properties of the ISM of nearby galaxies when combined with an analytic model. Two-point correlation methods are also applied to the Auriga simulations obtaining consistent results. The simulations reveal the processes on setting the instantaneous mixing scale and how it evolves with time. Based on the validation of this method on the observation and simulation sides, I will also introduce several ongoing projects that my collaborators are leading, including extensions to nitrogen abundances, high-z Universe, and high-mass-resolution simulations.