Move for Solidity Developers IV: Cross-Contract Call

This article guides Solidity developers on how to shift to Move-based blockchains (Aptos, Sui) by explaining cross-contract (cross-module) call semantics, showing code examples for direct function invocation, reference passing, and signer usage, and highlighting compiler optimization pitfalls (inline/macro) and access restrictions. It concludes with a feature comparison table between Solidity, Aptos Move, and Sui Move and notes that the next article will cover reentrancy protections in Move.