 Organic high-Q lasers can be created using a new solution processing technique called molecular super hindrance etching. This process involves the use of a special type of polymer, PGCC, which has pi-interrupted main chains and a super steric hindrance effect. The polymer is then cast onto a substrate and allowed to dry, resulting in the formation of massive interface cracks and multi-layer morphologies with photonic crystal-like ordering. The cracks allow for the efficient generation of deep blue light, while the multi-layers increase the efficiency and stability of the laser. Additionally, the laser's line width is narrowed to 0.08 nanometers and its quality factor is increased to 5,500 to 6,200, making this a promising approach for future applications in wearable photonics. This article was authored by Daunching Lin, Yan Li, Hijing, and others.