Ekko Block (Aike Tribe) is a blockchain operating system designed for distributed applications in the business travel industry. It is compatible with ETH and is a public chain tailored for business people. Every user can respect it. Rules and the principle of community autonomy jointly build a public chain ecology. Aike Tribe is the first DApp that can comment on travel destinations with one click, and at the same time has an operating system similar to ETH. More scenario-based DApps centered on business people will be launched in the future. EBKC tokens are based on the ETH blockchain and can be used for transactions, payment for Ekko Block platform services and discounts.