Recently, there is an interesting project - Espresso Foundation.

What it does can be simply said as bridging between various chains. You know, currently, each blockchain operates independently, and transferring assets across chains? It's incredibly slow, and you have to worry about security issues. Espresso is specifically designed to address this pain point, like building a fast track for the entire blockchain world.

By the way, they are currently holding an airdrop event! If you are interested in cross-chain interoperability, or simply want to grab an airdrop, now is a good time. After all, cross-chain tracks have always been a hard demand in the infrastructure, and projects with reliable technology are still worth paying attention to.