The Experimental Mineral Physics group applies a high-pressure and high-temperature experimental approach mainly using a laser-heated diamond anvil cell technique, which reproduces the condition of the deep Earth in the laboratory. We can generate pressure and tempertaure of the deep mantle (e.g. 135 GPa and 4000 K) and analyse the physical and chemcial propeties of the minerals at the base of the mantle. In particular, we can measure the elastic and sound wave velocities in minerals to better constrain the composition and mineralogical models of the deep Earth.