What does David mean?

Maintenance work generally refers to the maintenance of base stations and pipelines. Including hardware fault handling, inspection, emergency maintenance, etc. , contains a lot of chores, belongs to the relatively low-level work, the technical content required is actually not high. In fact, when the monitoring room of the operator's wireless center finds problems with the base station and transmission lines, the network maintenance personnel will send bills and telephone notifications, and let David be responsible for disassembling the machine, replacing the board, refueling, generating electricity, repairing (especially destructive weather such as typhoon, rain and snow) and antenna adjustment. And there will be some projects to build and expand base stations. All jobs will be graded, and points will be deducted if they fail to meet the requirements, and the scores will be linked to the money the agent gets. If there is any spot check and compliance meeting in the wireless center, it will be very strict with David and may urge people to stop generating electricity in the middle of the night. There are also some sudden regional blackouts, and Wei Dai has to move oil machines around ... so sometimes it will be very hard.