There are two ways of communication in the army: wired and wireless. Wireless means radio and wireless communication (similar to mobile phones and single-sided machines). A kind of communication is like a fixed telephone at home, which can only be connected by wires. The confidentiality of the latter determines that the troops still have to make plans.

The cable squad is required to check the wires every day, and it is not allowed to climb mountains and mountains. It is also necessary to regularly wipe insulation column and test wires on telephone poles, and bury and disguise wires.

It is often a person carrying a large bundle of wires and tools, which is not easy, but quite hard. And there is still the danger of being attacked in wartime.

When checking the line, run fast. When you get on the telephone pole, you should compare with the monkey, because there is no chief waiting by the telephone, and the line should be kept open at all times in order to issue military orders in time.