Did you know about the lunar calendar and seasonal divisions in Korea?

Are there any misunderstandings about the Korean lunar calendar? Many people think that the lunar calendar is the traditional calendar of Korea, but in reality, the lunar calendar currently used in Korea (the solar-lunar calendar) was created in 1644 by Jesuit missionary Adam Schall. This is a scientifically advanced system that was invented later than the Gregorian calendar. Additionally, Korea has not traditionally used only the lunar calendar. The traditional Korean calendar is based on the movements of the sun and consists of 24 solar terms, which include important days such as the winter solstice. The winter solstice is referred to as 'little Seollal,' and there is a culture that places importance on this day. This is similar to the reason why Christmas is celebrated on December 25th. Do you have any misunderstandings about the lunar calendar and solar terms in Korea, or is there anything else you would like to know about this topic?