Microstructure arrays find extensive applications in flexible electronics, optical devices, and biosensing. Nevertheless, traditional manufacturing techniques, which hinge on expensive and intricate processes like photolithography, fall short in terms of pattern updating and functional reconfiguration capabilities. Wang Li's team at Xi'an Jiaotong University has put forward the SDREC strategy, which leverages residual charge-induced electric field regulation to enable programmable patterned construction and reversible 'erase-rewrite' fabrication of microstructure arrays. Leveraging this approach, the team successfully crafted high-resolution patterned microstructures on silk fibroin surfaces, achieving feature widths as fine as 20 µm, and showcased the capacity to erase and rewrite patterns at will. Furthermore, this technology has paved the way for demonstrations in information storage and optical encryption/decryption, offering fresh perspectives for the fabrication of flexible electronics and patterned electrodes.