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Apart from relay laser communication, there were still some other methods to break through the rebel army's communication blockade, such as strong pulse signals. Although these carried limited information, they were sufficient to send some pre-agreed code contents, like the simple codes from 00 to 99, which were adequate for use.
All residents of Jiaming Town were captured, and Chen Fei got the news at the first moment.
The combat mech squad, which had never been put to use, carried a "Dragon Slayer Missile" warhead and rushed along the highway straight to Jiaming Town, maintaining continuous pulses through strong pulse signals.
For example, 00 meant moving, 010 meant no enemy contact, 02 meant non-combatant civilians spotted, 03 meant friendly combat personnel discovered, 04 meant multiple enemy targets found... and so on. These were for temporary use and didn't require encryption.