Leaf Link, the Vein Network Ordered Elastic Public Chain, proposes a novel solution for a public chain platform. It eliminates the high learning costs and risks developers face when building ecosystem applications across chains. Using visual programming design to construct the entire public chain helps Leaf Link become a new type of public chain ecosystem. It can accommodate hundreds of thousands of users simultaneously making timely modifications and releases to ecosystem applications. Additionally, it allows users without programming skills to learn and build their own Dapps in an extremely short amount of time.