Why do primary school students like to say "Oli is here"

This is a hot word on the Internet, which means cheering.

Ollie, which means "give strength", is also called geili oh. As an interjection, it contains a variety of emotional colors such as praise and cheer. The term comes from the words used by Kuaishou anchors during live broadcasts or video recordings. This mantra is widely used in videos by fans. On December 4, 2020, Ollie was selected into the "Top Ten Internet Phrases of 2020" released by the National Language Resources Monitoring and Research Center.