I found out about this lecture by joining the Han-ib community after watching Lee Jung-hwan's lecture. I've only used SPAs before, but I've never built one myself, so I was already clicking the payment button 😆😆. I couldn't participate in the Han-ib challenge because I'm already working on something else, but I'm very satisfied with the lecture. I skipped through the parts I already knew and only listened to the latter half of the lecture while reviewing with the handbook, but I'm very satisfied with the lecture. Lee Jung-hwan was easy to listen to because of his good diction, but Hyobin also has exceptionally good diction. Thank you.