What should students say at the end of the class in Taekwondo?

At first, the coach said to salute the national flag, then put your right hand on the left side of your chest, and then the coach said that class is over. You have to say "Ge Li", which means salute, and then you can bow. The brother on the first floor seems to say the same thing as our physical education class class. When class is over, the coach speaks Korean. In fact, I'm not very clear about what he said. All we have to say is salute.