Inside Cover Image

Halide perovskite solar cells, due to efficient power conversion and cheap in materials technology, are attracted increasingly attentions over the past decade. In this cover, cloud‐kissing tower built by perovskites is suffering the corroding of environmental moisture, light, heat and electricity. Although all these external factors will degrade the performance of halide perovskite solar cells, the prospect of halide perovskites is bright and hopeful, like it steadily stands up in these bad environments. The koi fish jumping out of the water and the bright light across the cloud both stands for good luck and prosperity (DOI: 10.1002/inf2.12104 ).