In the capital city in the 1960s, the autumn wind blew loudly. Eight-year-old Lin Weiguo stood at the door, as thin as a bamboo pole - his father Lin Ping passed away three days ago. He was the only eighth-level welder at the Hongxing Steel Rolling Plant. He earned 99 yuan a month. The leaders of the factory regarded him as a treasure. His mother didn't make it through when she gave birth to him, so this time it was better, both his parents were gone. Forest