Topological quantum materials have been classified and discovered in reality, representing a seminal progress in condensed matter physics in recent years. Beyond the topological surface states, the band structure topology gives rise to intriguing consequences in transport. I will talk about a nonlinear version of the Hall effect originating intrinsically from the Bloch wave function, which occurs in the presence of the time-reversal symmetry. Our theoretical study reveals that this phenomenon is strongly enhanced by the monopole-like Berry curvature in some topological Weyl semimetals, which is verified by very recent experiments.