"What are these?" In the central room of the police station shelter's air circulation duct, Uncle Ding looked at the objects mounted on the racks before him, asking confusedly, "They look like glass panels?"
A technician who was debugging the equipment heard Uncle Ding's question and, while continuing his work, explained, "These are algae cultivation tanks, technically referred to as bioreactor facades..."
After checking the condition of one bioreactor facade, the technician continued, "Indeed, in terms of material, you can call them glass panels; they're all made of acrylic. The facades are hollow, and after filling them with a culture medium, we'll use water and carbon dioxide to breed algae."
Observing the thousands of bioreactor facades being installed, alongside Uncle Ding, the city's police station manager asked, "They can supply oxygen? Using these algae?"