The next day.
Dawn had just broke.
A loud propeller could be heard in the sky above the research institute, along with the constant buzzing of engines arriving. It was so noisy that many of the researchers who were still deep asleep got woken up.
"What's with all that noise?"
"What is happening?"
"What time is it?"
"What is Professor Zhang up to this time?"
"It doesn't feel like it's Professor Zhang today!"
"Listen to that? Isn't that the sound of a helicopter?"
"Ah? Wake up, quick!"
"I've not had a good night's sleep yet this new year."
No one knew what was going on. Everyone came out of their rooms grumbling about the commotion.
