Episode 4 recap: Pioneer Company stationed in Yongquan Town, Sha Menghai forced Sha Kai to come to the construction site.

The groundbreaking ceremony of the Chengdu-Chongqing Railway proceeded as scheduled. Deng Xiaoping and Liu Bocheng delivered enthusiastic speeches at the ceremony. Deng Xiaoping first explained the significant significance of the Chengdu-Chongqing Railway to the people of Sichuan, and then estimated the upcoming difficulties. He hoped that the experts and soldiers would cooperate sincerely to create brilliance. Liu Bocheng also made an impassioned speech, and He Long personally handed the "Pioneer" banner to Captain Ma.

The whole groundbreaking ceremony was filled with red flags, and the soldiers were full of fighting spirit and confidence. After the ceremony, Luo Xiangqian followed the exploration team on the journey, and everyone was in high spirits, singing all the way. Although Luo Xiangqian's leg injury had not healed, he was determined not to be separated from his company and marched with a crutch.

The Pioneer Company quickly arrived at Yongquan Town. Guo Shuanglai, the mayor of the town, had already welcomed them with the villagers. He proposed to arrange the company in the town office, while the other soldiers could stay in the villagers' homes. They had already done the work of propaganda and mobilization for the villagers. However, Luo Xiangqian was worried that the troops would disturb the villagers and insisted on arranging the company in the abandoned granary at the entrance of the village.

Guidance officer Wu Qiang and Deputy Platoon Leader Zhang Biao, who went to find accommodation for the soldiers, found that Yongquan Town was very poor after walking around the village. The villagers already lived in very difficult conditions. If they made room for the soldiers, the villagers would have to live outside. After learning about this situation, several leaders of the Pioneer Company discussed and decided to use the vacant land outside the granary as the soldiers' camp, no longer disturbing the villagers by entering the village.

Luo Xiangqian had an impatient temperament. As soon as they settled down, he hurriedly started working, quickly assigning tasks and urging everyone to work hard and catch up with Zhou Fengzi's Seventh Company. At night, heavy rain suddenly poured down, and the soldiers were soaked through. At that moment, Mayor Guo and the villagers arrived. They wanted to take the soldiers back to their own homes.

Luo Xiangqian and Wu Qiang were deeply moved. They were too excited to express their gratitude, but they solemnly saluted the villagers. The road was very slippery after the rain, and Luo Xiangqian, who had difficulty walking, fell directly on the way to the construction site. He decided to help the villagers build this essential road for their daily life and work.

The Chengdu-Chongqing Railway has captured the hearts of the people nationwide. Under the direct care of the Party Central Committee, technical personnel from all over the country have gradually arrived in Sichuan. Zhao Guoliang, representing the Southwest Railway Bureau, expressed a warm welcome. However, there was still a shortage of technical personnel at the frontline construction site, and the bureau had already dispatched all available personnel. Sha Kai went to find Sha Menghai to inquire about the situation of the exploration team. Sha Menghai knew that he was concerned about Ye Lan, but due to transportation difficulties, he didn't have any further information.

However, he instructed Sha Kai to be prepared and ready to go to the construction site to be responsible for technical construction. Sha Kai was reluctant to go to the construction site as he didn't want to go to a harsh environment. Sha Menghai criticized him sternly. The preliminary work for roadbed construction was already prepared, and as Luo Xiangqian said, everything was ready, only the east wind was missing. They urgently needed technical personnel to guide the construction of the roadbed.

Wu Qiang had urged Captain Ma many times, and Captain Ma had been constantly seeking help from Zhao Guoliang. In the end, Sha Kai was assigned to the Pioneer Company. When the comrades of the Pioneer Company heard this news, they were thrilled. Despite his leg injury, Luo Xiangqian personally led the soldiers with great fanfare to welcome the technical personnel. When they saw Sha Kai, both of them were surprised. Sha Kai introduced to Captain Ma that Luo Xiangqian was his and Ye Lan's savior, and he expressed his sincere gratitude to Luo Xiangqian.

Worried about the difficult journey back to the company, Luo Xiangqian specifically instructed two soldiers to carry a sliding pole to escort Sha Kai back to the company. When Zhang Biao saw the portable toilet that Sha Kai brought with him, he was somewhat annoyed. Luo Xiangqian told him to control his temper, and Zhang Biao reluctantly helped Sha Kai carry the toilet. Wu Qiang and the soldiers were already waiting at the company and warmly welcomed Sha Kai's arrival.

Seeing the simple and crude accommodation at the company, Sha Kai claimed that he needed to review materials and blueprints and requested a quieter single room.