Worked on enhancing interoperability and stability for wallet-core by addressing a breaking change in Polkadot extrinsic encoding to support Acala Spec 2270 on network 10. The approach involved updating compatibility checks and expanding test coverage to ensure the new encoding requirements were met, reducing the risk of production issues for users. Improvements were integrated directly into the xuelongqy/wallet-core repository, with a focus on blockchain development and cryptography using C++. Continuous integration pipelines were also enhanced to validate encoding paths against the updated Acala specification, ensuring forward compatibility and maintaining robust support for Polkadot-based networks.