Deep Space Echoes: the Signal My Dad Left

[Hard core science fiction + suspense] When Zhao Yuan was repairing the water pump in the repair shop, a man's voice suddenly came from a broken radio station. That man's name was Zhou Jianguo, and he died three years ago. He said that he was the last signal left by Zhao Yuan's father, trapped in the circuit, waiting for Zhao Yuan to activate it. He also said that the disappearance of Zhao Yuan's father was not an accident - he received information that he should not have received. Now, it's Zhao Yuan's turn to receive it.