I don't usually leave lecture reviews... but I feel like I should, so I'm leaving one!! I came here expecting 100, but I feel like I'm getting 1000. I was so curious about the structure and principles of ERC20, and the parts that were bothering me have been resolved. I'm also learning ERC721 based on this, and it's been a huge help. There are not many Solidity development materials in Korea... but yours is definitely the best!! The part where you connected ERC20 using React felt like rain in a drought. Thank you!!! I'll definitely listen to other lectures that Diwon uploads. ㅎㅎ