In September 1954, a passenger ship between Aomori and Hakodate sank at sea, killing a large number of passengers. Ajiujin, a member of the technical investigation team of the Qinghan Tunnel, was conducting an investigation in the Jinqian Strait. He accidentally saved a suicidal girl, Mutomura Doe, and took him to work in a food store run by Allan. In 1956, Ajiujin reported to his superiors that the Qinghan tunnel could be dug. The next year he was sent to Mingshi Strait to investigate and get married and have children in his hometown. In 1964, the Nippon Railway Company was established, the construction of the Qinghan Tunnel began, and Ajiujin came to Aomori. With the help of Duohui, he recruited a group of young people who were determined to give their lives for the Qinghan Tunnel. After the construction, due to the harsh environment of the wind and waves, the project only dug five meters in two months. In order to complete his father's ambition, Ajiujin always fought at the construction site in spite of the torment of rheumatism. On the day my father died of illness, a roof fall occurred in the tunnel and groundwater surged out. Ajiujin with workers and technicians to rescue, although people continue to be injured or even sacrificed, but no one flinched, and finally subdued the tunnel seepage. After the longest tunnel in Japan was completed, Ajiujin presented a bouquet of green grass flowers on his father's grave.
