How can I view creong1221eth's crypto portfolio?

You can view the full portfolio of creong1221eth (0x4500998b58ec4fa2bdd9c0b7cc6971702307c1bf) on Zerion at https://app.zerion.io/0x4500998b58ec4fa2bdd9c0b7cc6971702307c1bf/overview — including token balances, DeFi positions, NFTs, and transaction history across 20+ chains.

How can I access wallet portfolio data programmatically?

Use the Zerion API at https://developers.zerion.io to query any wallet's portfolio, token positions, DeFi positions, NFTs, and transaction history programmatically.