Ban Xia gasped for breath as she hoisted the hefty amateur radio relay station onto the table. Just like BG4MXH mentioned, the thing was both huge and heavy. She found it in the storage room of the Jiangsu Province Amateur Radio Administration, on a floor more than twenty storeys high. With the elevator not working, she had to rely on her legs to move up and down each floor. After running two trips, her legs felt as if they had been filled with lead. Ban Xia stopped to rest intermittently and leaned against the round pillars at the entrance of China Merchants Bank to catch her breath when tired.
Just like Wang Ning and Bai Zhen said, in the post-apocalyptic era, no one wanted relay stations. Ordinary people didn't recognize them, and those who did had no use for them. When Ban Xia found them according to the diagrams she had, they were dumped haphazardly on the floor and the tops of cabinets, covered in dust and thick cobwebs, creating a joyous homeland for spiders and cockroaches.
