"The higher-ups are pushing us to come up with weapons against submarines. Let's all brainstorm and see if we have any good ideas," a Shireck engineer said as he walked into the room and tossed a stack of documents onto the table to his subordinates.
A group of people looked worried, and one of them spoke up, "There's no way. We've been thinking for so many days, but we still can't solve the most critical issue."
"Yeah, we can't detect submarines in advance—that's the biggest problem," another experienced engineer sighed and added.
They hadn't known the term 'submarine' before, but the Tang Country's radio had informed them of the corresponding vocabulary.
The enemy was essentially laying all their cards on the table: just one move of lurking underwater, yet Shireck couldn't come up with any method to counter it.