I think this is a very helpful lecture on understanding and building a design system. It goes beyond simply introducing the concept of a design system and shows how to build, operate, and apply it in practice. I received a lot of help in practice because it systematically and thoroughly covers each component of the design system. I plan to deepen my understanding through repeated learning whenever I encounter roadblocks. Thank you, Bold, for your wealth of experience and clear, informative explanations, which have been very helpful.