Therefore, the relationship between the three is expressed by two formulas:
区块链 ≠ 数字货币，
Blockchain ≠ digital currency,
区块链 ≥数字货币 ≥比特币。
Blockchain ≥ Digital Currency ≥ Bitcoin.
At the same time, blockchain and digital currency are complementary. With the existence of digital currency, blockchain can achieve better development.
Many people mistakenly confuse digital currency with blockchain. It is because the blockchain has been known and spread in the form of Bitcoin since its inception.