The researchers used a combination of magnetotelluric, seismic, gravity, and magnetic data to study the physical properties and structure of the middle Guizhou uplift area. By applying joint inversion techniques, they were able to determine the distribution of target strata, establish basic geological models, and identify key structural features. Through this approach, they successfully determined the velocity, electrical, density, and magnetic structures of the area, providing a solid foundation for further geological studies. The use of joint inversion with multiple geophysical data sets proved to be effective and practical in understanding the complex geological features of the region.