Word Builder lessons are designed to help you understand how to expand your vocabulary by learning/understanding some common and basic building blocks of Korean words. The words and letters introduced through Word Builder lessons are not necessarily all Chinese characters, or 한자 [han-ja], and although many of them are based on Chinese characters, the meanings can be different from modern-day Chinese. Your goal, through these lessons, is to understand how words are formed and remember the keywords in Korean to expand your Korean vocabulary from there.  You certainly don’t have to memorize the Hanja characters, but if you want to, feel free!