I followed the instructions to open the pan, heated the pan before frying each time, and used oil to maintain the pan after washing each time. It was basically non-stick, but the size was a little small, so two eggs would definitely stick together when fried, as shown in the picture. Everything else was good.
If it sticks to the pan, it is either because the pan was not heated before use or because the pan was not maintained. The iron pan must be oiled to prevent it from sticking.
I also bought this brand's women's cooking pan (really very light) and purple clay pot. Everything is very good and I am very satisfied.