Song Yunhui reported to the Donghai Chemical Preparatory Office and became the youngest deputy in the leadership team of Donghai Chemical. With his strong business ability and courage, he continued to play the role of the backbone. In the process of early preparation and establishment of the joint venture, he led the Donghai project through difficulties and moved forward again and again, but he also caused dissatisfaction because of his popularity. Song Yunhui took his wife and daughter to Donghai, and confusion and suspicion poured into their lives. The cracks between the two gradually became deeper and deeper, and finally divorced. Xiao Lei's family made greater and greater strides in reform, but due to the neglect of safety issues, the copper factory exploded. Lei Dongbao was imprisoned for bribery. His previous achievements and mistakes were divided into two and given a lighter sentence. After being released from prison, Lei Dongbao built Lei Ting Company to lead Xiao Lei's family to a good life again. No matter how prosperous or downtrodden he was, Wei Chunhong was always behind him. Yang Xun came to Donghai to develop. After going through ups and downs, he survived and made the daily necessities market flourish. He wanted to strike while the iron was hot to make a high-end shopping mall and continue to work hard. Liang Sishen, a graduate from a prestigious university and a former investment banker, led a team back to China as a representative of Luoda to conduct a joint venture inspection and negotiation in Donghai. Song Yunhui and Liang Sishen, who were once teachers and students and are now negotiating opponents, experienced collisions, conflicts and reconciliations in rounds of contacts and confrontations, and the two jointly pushed the joint venture process forward.