This article explores two intertwined theoretical themes: the evolution of DeFi's liquidity technology and the transformative impact of on-chain barter from an economic history perspective. The aim is to assert that a significant DeFi revolution is imminent; it just requires a bit more patience. Visionary builders who maintain idealism will ultimately be rewarded by the market. We've meticulously monitored the development of the decentralized exchange (DEX) market to demonstrate that the on-chain barter trade's emergence is not coincidental, but a genuine game-changer. It marks a crucial chapter in the history of Web3 builders. Realizing its potential calls for substantial innovation and enhancement, not just within the DEX but also at the fundamental infrastructure level.