2) What is Blockchain?A blockchain is a distributed digital ledger that allows for the secure storage of data. By recording any kind of information—such as bank account transactions, the ownership of Non-Fungible Tokens (NFTs), or Decentralized Finance (DeFi) smart contracts—in one place, and distributing it to many different computers, blockchains ensure that data can’t be manipulated without everyone in the system being aware.
mergeSortRecursive(arr, left, mid); // 排序左半部分
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Publication date: 28 February 2026
NCBD（餐宝典）数据显示，2025年中国现制咖啡市场规模达2177.9亿元，同比增长13.4%。并且连锁化率继续提升，目前已经逼近40%。
Additional reporting by Usman Zahid and Mahfouz Zubaide