These tasks are my interesting ones, I have learned a lot from them. thank you Professor @yohan2on.

I look forward to your verification of week 4, thank you very much.

https://steemit.com/hive-108451/@zheyeng/crypto-academy-week-4-homework-post-for-yohan2on-introduction-to-decentralized-finance-defi-a-new-fintech-revolution-part-1