Solana's smart contract design is unique, using an account - based model, which separates executable accounts and data accounts, making program upgrades easier. It supports programming languages such as Rust, C, and C++, which reduces the learning cost for developers and is conducive to attracting more developers to join the ecological construction. With the continuous growth of its ecosystem, covering many fields such as DeFi, NFT, and games, the application scenarios are becoming more and more abundant, which also increases its investment value.