Sui Li deliberately seduced Sha Kai while drinking. Sha Kai soon fainted after drinking the drugged wine prepared by Li Muyang.

When Sha Kai woke up, he found Sui Li sleeping next to him. Li Muyang kept claiming that he had taken intimate photos of Sha Kai and Sui Li, and threatened Sha Kai to cooperate with him to destroy and delay the construction progress of the Tuojiang Bridge, otherwise the photos would be publishedHand in hand, Sha Kai was ruined, and Sha Kai was dumbfounded.

The existing piers of the Tuojiang Bridge were built under the leadership of Bernard, a French bridge expert. Ye Lan felt that the piers could be used, but she wanted to inspect them in person. Luo Qianqian accompanied Ye Lan in a small boat to measure various data of the bridge piers., and then hold a meeting to discuss specific repair matters.Sha Kai asked for demolition and reconstruction on the grounds that the old bridge piers were in disrepair. Ye Lan believed in Bernard's professional ability and presented data and information to convince him. Zheng Yanyan and Ma Bin supported Ye Lan's idea, but Sha Kai still refused to give in., and asked Luo Xiangqian to send someone into the water to test the firmness of the bridge foundation, but they had no diving equipment at all.

Ye Lan had inspected the water quality and flow rate of the Tuojiang River in advance. She firmly believed that she could complete the calculation task without diving equipment, so Luo Xiangqian volunteered to accompany her.

Sha Kai followed Li Muyang's instructions and tried every means to delay the construction progress. Luo Xiangqian and Ye Lan used practical actions to solve the problems one by one.Li Muyang sent Sha Kai to steal the hydrological and weather data for the construction of the Tuojiang Bridge, as well as the technical data of the bridge piers. He looked for an opportunity to blow up the bridge, and asked Sha Kai to contact the temple cleaner Lao Zhou.

Luo Xiangqian and Ye Lan risked their lives in the water to make calculations. Ye Lan worked overtime day and night to sort out the data. He didn't even bother to eat. Luo Xiangqian personally made a bowl of steaming noodles for her, and Ye Lan ate it happily.Later, Ye Lan handed the data to Tian Jian for review, and Tian Jian showed it to Zhao Guoliang.

The Ministry of Railways invited bridge expert Tikhanov from the Soviet Union. Zhao Guoliang handed him the data compiled by Ye Lan and asked him to take him to the site.The relationship between Wang Lanzhi and Zhang Biao has become stronger over time. They have endless love stories and wish to be together every day. Zhang Biao wants to marry her after the Tuojiang Bridge is repaired. He takes Wang Lanzhi to Luo Xiangqian to apply, and Luo Xiangqian urgesThey got married as soon as possible and promised to prepare a new house for them. Wang Lanzhi didn't want to cause trouble to everyone and wanted to keep everything simple.

Ye Lan gave Zhang Biao and Wang Lanzhi a thermos bottle, Luo Xiangqian gave them a mirror, Ku Mei and Chen Daman gave them red dates and peanuts, wishing them a child soon, Zhang Biao and Wang Lanzhi were happy from ear to ear.Zhao Guoliang, Ma Zutang and Sha Menghai brought Soviet experts to the Tuojiang Bridge construction site for an on-site meeting. Ye Lan proposed the idea of ​​reinforcing the original bridge piers. Sha Kai and Sha Menghai both insisted on demolishing it. Ye Lan took out the calculated data and confirmed that the foundation of the bridge piers was very weak.It is sturdy and there is no need to demolish and rebuild it, otherwise it will waste people and money.

Tikhanov objectively analyzed the situation of the bridge piers and supported Ye Lan's idea.Local people sent condolences to the Soviet experts, and students also came to welcome them. Zhao Guoliang thanked everyone for their support and promised to repair the Chengdu-Chongqing Railway as soon as possible.Sha Kai complained to Sha Menghai, and Sha Menghai advised him not to confront Luo Xiangqian. Sha Kai asked Sha Menghai to transfer him back to Chongqing as soon as possible. He did not want to stay in the first team anymore, but Sha Menghai flatly refused.

The construction of the Tuojiang Bridge is about to start, and every squadron leader has stated that he will work overtime to ensure that the task is completed ahead of schedule.Sha Kai asked Ye Lan for information and data on the Tuojiang Bridge, lying that he wanted to take it back to study. Ye Lan gave him all the information without thinking too much.

Sha Kai copied down the information and data overnight. Zhang Biao suddenly returned to the dormitory. Sha Kai was so frightened that he hurriedly put it away. Zhang Biao found that something was wrong with Sha Kai recently and asked him the reason. Sha Kai tried his best to cover it up. Zhang Biao saw that he had trouble hiding something., persuaded him to tell the truth and promised to go all out to help him, Sha Kai felt warm in his heart.

Sha Kai copied the information and gave it to Li Muyang, begging Li Muyang to let him go. Li Muyang agreed to ask for credit in the party-state for him. Sha Kai just wanted to break away from him, but Li Muyang refused to let him go and would be tied to Sha Kai forever.Sha Kai knew that Li Muyang was a murderous devil, and he regretted it.

Through the unremitting efforts of all the workers of the First Brigade and the Eighth Brigade, the construction project of the Tuojiang Bridge was completed ahead of schedule. Zhao Guoliang would like to take credit for them and hold a completion ceremony.Sha Kai passed the news to Li Muyang, and Li Muyang decided to sabotage the ceremony. He sent someone to deliver a message to Sha Kai.

Li Muyang decided to take people to Lijiadu to make arrangements, and asked Sha Kai to bring him a letter of introduction. Sui Li did not trust Sha Kai and was worried that the plan would be messed up like last time, so she decided to detain Sha Kai while Sha Kai was delivering the letter.