Abstract: Grid generation is the first step of numerical simulations in computational fluid dynamics (CFD) applications. The quality of mesh will influence directly the accuracy of numerical results, so it has been a very important research field in CFD. Under the guidance of Prof. Hanxin Zhang, the authors had engaged in unstructured and hybrid grid generation techniques, and corresponding numerical schemes since 1990s, and then in moving grid generation techniques and unsteady numerical schemes. In this paper, recent progress in grid generation techniques, including the static and dynamic hybrid grid generation techniques over complex geometries, steady/unsteady numerical schemes and flow solvers, and their applications in aerospace industry was reviewed.Finally, the challenges and the potential directions of grid generation techniques in the future were discussed. This paper was to appreciate Prof. Hanxin Zhang for his cultivation in his 80^th birthday