Hello Hyunseong This is Hyangro from Inflab. We are truly sorry for the inconvenience. If you could tell us what you mean by the Korean explanation being insufficient, we will try to improve it. Regarding the quality issues with translation and dubbing, we have thoroughly reviewed everything again and improved the deficient system issues, resulting in several improvements being applied. We will continue to keep your feedback in mind and work to create a better system. Thank you very much for using Inflearn, and we will repay you with better service.