Editors' Suggestion Tuning Second Chern Number in a Four-Dimensional Topological Insulator by High-Frequency Time-Periodic Driving Zheng-Rong Liu (刘峥嵘), Rui Chen (陈锐), and Bin Zhou (周斌) Chin. Phys. 2024, 41 (4): 047102 DOI: 10.1088/0256-307X/41/4/047102 ...