Okay, so Saint Mun is a person who lived a really long time ago, like back in the olden days. He was a monk, which means he was a man who dedicated his life to serving God and living a very simple and peaceful life.
Saint Mun was known for his ability to heal people who were sick or injured, which means he had a special power given to him by God. He used this power to help others and show them love and kindness, which are things that God wants us to do.
People who knew Saint Mun thought he was a very wise and holy man, which means he knew a lot about God and how to be a good person. They also believed that he had a special connection to God, which is why he was able to do such amazing things.
Even though Saint Mun is no longer alive, people still remember and honor him today for the good things he did and the love he showed to others.