B-level Base.
On the evening of the three-day holiday, all personnel of B+ level and above were gathered in the basement, without exception... and one "waitress."
A secretary-dressed "female" leisurely brewed coffee and tea according to everyone's preferences, placed them down, and then stood quietly in the corner.
Lin Ju glanced at the improved model two robot now clad in silicone skin, coughed to draw the attention of those present, and then, amid eager gazes, extended his hands, and a book of moderate thickness appeared out of thin air.
The simple black cover read "Introduction to Radiation Propulsion Technology" along with the corresponding author's name; there wasn't even a mention of the publisher, and at the bottom right, there was a stamp marked "Top Secret."