BIP39

2. Hierarchical Deterministic Wallet | HD Wallet
To address the flaws of random wallets, the Bitcoin developer community established three standard protocols in 2012, 2013, and 2014, namely BIP32, BIP39, and BIP44 (BIP, Bitcoin Improvement Proposal), which ultimately formed the architectural foundation of mainstream wallets today.

Figure 1, BIP32, 39, 44
Figure 2, Advantages of HD Wallet
3. The underlying logic of HD Wallet
Initially, the HD wallet was established under these three protocols, and subsequently developed and evolved based on them. Below, we will briefly describe how these three protocols work together.