ELI5: Explain Like I'm 5

Elderly martial arts master

An elderly martial arts master is someone who is very good at fighting and knows a lot about martial arts. They have been practicing and learning for many years and have become experts in their art. Even though they are old, they are still very powerful and know how to defend themselves in case someone tries to harm them. They have learned many different techniques and moves that help them to fight off any attackers. They are very respected in their community and people come to them for guidance and to learn from their experience.