This article introduces how Stacks brings smart contracts to the Bitcoin blockchain and discusses the investment value of the STX token. Stacks achieves symbiosis with Bitcoin through the POX consensus mechanism, where miners earn STX rewards by producing blocks, and holders earn BTC rewards by participating in Stacking. Stacks also implements the sBTC mechanism, allowing smart contracts to read Bitcoin state and settle transactions on the Bitcoin chain. With a first-mover advantage, Stacks' ecosystem covers areas such as wallets, NFTs, DEX, DeFi, etc., and STX, as the native token, holds long-term investment value. With the development of the Bitcoin L2 track, the Stacks ecosystem is poised for significant growth, demonstrating enormous potential.