Amidst the cheers from the audience, I made my way to the control booth.

The staff was methodically managing the lights, so I walked over and said, "The person on stage is my sister. She's a bit unhappy with the content on the big screen and asked me to change it. Could I please do so?"

After fabricating this excuse, the staff agreed.

I then turned to them and said, "Today is my sister's debut. I'd like to handle it personally. You all can take a break."

After learning the basic operations, the staff stepped aside.

I connected my phone and began uploading the video.

There was a delay before...