What is the difference between incisional and non-incisional double eyelid surgery in Korea?

I am planning to get double eyelid surgery in Korea and I am confused about the two main methods. Can someone explain the key differences between incisional (절개) and non-incisional (비절개/매몰법) double eyelid surgery? What are the pros and cons of each? I have slightly puffy eyelids and want natural-looking results. Which method would be more suitable for someone in their late 20s? Also, how long does each procedure take and what is the typical recovery time? I would really appreciate detailed answers from those who have experienced either method!