Episode 4 recap: Du Bing Yan disguised himself and left the city to search for Yuan Bu Qu.
Qi Tian Lei did inform his master about this matter, and his master happened to have acquaintances in Jingzhou, which made it easier to inquire about Du Bing Yan's whereabouts in Jingzhou. Du Bing Yan asked Ya Huan, Hong Lian, and Hong Yu if they knew how the two wives of Yuan Bu Qu had died, but none of them had much knowledge about it. Coincidentally, Hong Lian mentioned that she had seen General Yuan once, but Li Zongguan was standing behind her.
Ya Huan and the others dared not continue speaking, which made Du Bing Yan very angry. He took Ya Huan and the others back to the room. After returning to the room, Du Bing Yan asked Hong Lian to finish her sentence and then decided to go find Yuan Bu Qu himself. Moreover, Yuan Bu Qu's military camp was only a day's journey away.
Du Bing Yan put on Yuan Bu Qu's clothes and took the opportunity to slip away while the soldiers were changing shifts. Upon learning of this, Li Zongguan ordered the soldiers to guard the city gate to prevent Du Bing Yan from returning to Yangzhou. Du Bing Yan, disguised as a man, successfully passed the soldiers' inspection at the city gate and left the city. After leaving the city, Du Bing Yan found a post station to have a meal and coincidentally ran into Liu Ruo Qian, Qi Tian Lei's master. Du Bing Yan asked Liu Ruo Qian where he was heading, and Liu Ruo Qian provided the information. Just then, an elderly woman deliberately fell to the ground, claiming that the innkeeper had pushed her. She asked the innkeeper to help her back home, but the innkeeper refused. Du Bing Yan paid for the tea and helped the elderly woman, offering to escort her home. Liu Ruo Qian thought highly of Du Bing Yan, but just as they were leaving, the innkeeper said she had never seen the elderly woman before, making Liu Ruo Qian feel uneasy.
At this point, Du Bing Yan had already escorted the elderly woman home, but she insisted that Du Bing Yan enter her room. Du Bing Yan tried to leave but was stopped. They wanted Du Bing Yan to hand over all his money, and it turned out that the so-called old lady was an imposter. When Du Bing Yan felt that his life was in danger, Liu Ruo Qian arrived in time and rescued him. Du Bing Yan was very grateful to Liu Ruo Qian, and learned that Liu Ruo Qian was also heading to the border city. Du Bing Yan decided to go there together with Liu Ruo Qian. Du Bing Yan learned that it was not easy for an ordinary person to enter the military camp, so he suggested becoming Liu Ruo Qian's apprentice. This way, he could learn medicine and also search for his relatives, which Du Bing Yan gladly agreed to. Soon, Liu Ruo Qian and Du Bing Yan arrived at the military camp, where countless patients were present. Du Bing Yan was overwhelmed at the sight of so much blood and almost couldn't help feeling nauseous.
Ke Shi Zhao noticed that Li Yu Hu was alone by the lake, so he went over to greet him. He mentioned that Qi Tian Lei had entrusted him with everything since Qi Tian Lei fell ill, and he promised to hand it over to Qi Tian Lei once he recovered. Xiao Qiao brought some herbal soup and Ke Shi Zhao mentioned that he would be away for some time, asking Xiao Qiao to help take care of Li Yu Hu. Qi Tian Lei, who was nearby, observed everything with tears in his eyes.
Liu Ruo Qian's nephew, Sha Ping Wei, helped Du Bing Yan find the name of his so-called "brother." However, they discovered that there was no such person in the military camp. Sha Ping Wei also mentioned that Yuan Bu Qu had been busy lately, and his newly-wed wife had quietly run away without meeting him. Sha Ping Wei enjoyed drinking with Du Bing Yan and even took him to the river to go swimming. When Du Bing Yan saw Sha Ping Wei undressing, he quickly turned away, but fortunately, the bugle sounded, prompting Sha Ping Wei to leave. Du Bing Yan breathed a sigh of relief.
On the other hand, Qi Tian Lei gave Li Yu Hu many interesting things. Through the Western-style glasses, Li Yu Hu saw someone being beaten, and to his surprise, it was Wang Hu Zi assaulting a young boy. Qi Tian Lei approached to inquire about the situation, but the boy refused to say a word. Qi Tian Lei asked Wang Hu Zi to hand the boy over to him, but Wang Hu Zi insisted on following Ke Shi Zhao's orders. Despite Wang Hu Zi's refusal, Li Yu Hu couldn't stand it and directly confronted Wang Hu Zi. He took the boy and Qi Yan Sheng joined them on the way back.
Qi Tian Lei asked the boy about his situation, and it turned out that he came to seek justice from Lao Tai Jun. The boy shared his story with Qi Tian Lei. Afterwards, they went to the boy's godmother's house together. However, when they arrived, the godmother was nowhere to be found. In fact, the godmother was someone who appeared tough but had a soft heart. Upon learning that Qi Tian Lei and Ke Shi Zhao were different from others, she agreed to let them in.
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