Courier Ruo reached the institute with a waterproof tube sealed in Qiao’s mark. Gu checked the seal against the message log before opening it. The old border furnace’s original field measurements were inside, along with a short note from the engineer.
“The north channel is split,” Gu said, tracing the line on the chart. “The central feed still works, but its maintenance is overdue.”
Qiao recommended an inspection before any modification. He would guide a small pilot if the group traveled to the site.
“Does the map show the service road?” Yan asked.
Ruo checked the courier sheet. “The route remains open for three days. After that, the north road closes for scheduled maintenance.”
The group had a narrow window to travel, but needed the authenticated archive copies and the capital’s latest maintenance map. Ruo unrolled the road schedule. The north route would close for repair in three days, then remain closed for a week. A local ferry could shorten the journey, but the courier route would be carrying the map request.
“If we go before the copies arrive, we can’t show the site team the original measurements,” Gu said. “If we wait too long, we miss the road.” and the capital’s latest maintenance map. Yan asked whether the Registry would provide the map without his appointment.
