In which novel did the two protagonists, Qin Sang and Du Lang, appear?

Answer 1

I don't think it'll necessarily meet your needs, but I'll try my best to recommend a novel that's most relevant to your description." Starting from the Western Han Dynasty, I'll start to ruin it." This book is a historical novel written by the author, Qi Qi Du, about the Qin, Han and Three Kingdoms. The general plot of this novel is as follows:

A gust of wind blew past, and two thousand years of different time and space intertwined. Li Huan came to the border of the Western Han Empire and met two people. One was Zhang Qian, and the other was Gan Fu.
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Du Ruo Heng Wu was an ancient romance novel written by the author. The general plot of this novel was:

In her previous life, Du Ruo was a yes-man and listened to others in everything, but in the end, she ended up in a miserable state.
After her rebirth, Du Ruo carefully avoided all the dangers that the Du family might encounter, but she did not expect to walk into another net step by step.
A certain someone narrowed his eyes." Third Brother? Who is Little Lady calling?"
"…You!"
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" The Strongest Prince Consort of the Great Tang " was a historical novel written by the author Ling Yu. The general plot of this novel was:

When he woke up, his soul had entered the Great Tang. The tragic Second Young Master Du was faced with two choices at the beginning of the game. He had to follow the path of history and marry the princess. A few years later, he would be killed by Li Er. He had to refuse the imperial edict and not be Li Er's son-in-law. He would face a serious crime. Second Young Master Du, who had lost his power, refused Second Young Master Li's imperial edict and was demoted to guard the gate of Youzhou City. Youzhou City fell, and the people suffered. At the crucial moment, Du He arrived and single-handedly turned the tide, forcing back the fifty thousand Turkic vanguard. He fought a bloody battle and became famous in one battle. They would conquer the Turks, sweep the north, defeat Koryo, and return the people of the Great Tang a peaceful and stable living environment…
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The book " Dayan Supreme Road " was a wuxia fantasy novel written by the author, the evil young master of Black Wind Mountain. The general plot of this novel was:

Dayan and Mengji were fighting, and the world was surging! Du Yong, the only son of the third branch of the Du family, was involved in a series of storms due to an inexplicable assassination attempt. The warmth and blood of the aristocratic families, the benefits and disasters of the royal court, the romance and danger of the martial world, the blood and cruelty of the battlefield…One could only understand the feelings of these people when they were in the game. Let's see how Du Yong will walk calmly and slowly walk the path of a Supreme Martial Artist!
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The book " Great Tang's God-Level Prince Consort " was a historical novel written by the author, Western Zhou Sanren. The general plot of this novel was:

After crossing the Great Tang, Du He had wanted to keep a low profile and become rich, but her strength did not allow it! Princess: " Du He, when are you going to marry me…" Cheng Yaojin: " You are my big brother!" Li Er: " Please don't harm my country!"
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" Anecdotes of Night Swallows " was a mystery detective novel written by the author, Is It Full? The general plot of this novel was:

After many years, they became old friends at first sight and worked together to solve cases. Who knew that their childhood friends were each other? To Li Guangping, Lu Qiuwan, Liang Mingxiu, and Fan Wenjin, how could they live on without him? Mi Qing is Du Shenyan's true love. To Du Shenyan, finding out the truth of your death is my wish to live on. Mu Ze was indebted to Du Shenyan for saving him. To Mu Ze, it was his responsibility to protect Du Shenyan's life. Even if he harmed Du Shenyan's heart, Du Shenyan knew that Mu Ze had harmed someone who harbored ill intentions towards him. As a servant of the Li Residence, Wang Qingshan's mission was to protect his master's children and find out the murderer. Gu Si said to Qin Chuan," Even though there's a blood feud between us, I still want to find an excuse to love you." To Ruoruo and Qin Lang, they were childhood sweethearts. If you were young, it would be you in the future. Yu Wang Er and San Jin said, you are my second brother, I naturally believe you. Since you trust me so much, I will definitely protect you.
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" The Legend of Ancient Shu " was a historical novel written by the author, Qian's Little Qian. The general plot of this novel was:

At the end of the Western Zhou Dynasty, there was political turmoil, and tribes fought against each other. At that time, in the ancient Shu country in the southwest region, they watched the glorious life of the heroic Shu King Du Yu.
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" My Father-in-law, Emperor Gaozu of the Han Dynasty " was a historical novel written by the author, a young man in his twenties. The general plot of this novel was:

The protagonist had transmigrated to become Zhang Zhong, also known as Qin Shou. He was born in Qin and lived in seclusion in Xiayi. One day, he captured four people. One was called Liu Bang, the other was called Xiahou Ying, and the other two were Liu Ying and Liu Ji.
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Minister of Qin was a historical novel written by Yao Hui. The general plot of this novel was:

The Eastern Jin Dynasty was peaceful. The aristocrats advocated idle talk. There were internal and external troubles. The protagonist became an orphan because of the war. After several fortuitous encounters, he was lucky enough to be nurtured by a mysterious expert. Who knew that he would fall into a huge whirlpool. Fortunately, he met many confidants and helped him clear the fog at the critical moment. The protagonist experienced many ups and downs in life, saw the fickleness of the world, experienced mutual deception, gradually tempered, grew up, and finally achieved a career story. Among them, there were both gratefulness and revenge, as well as psychological battles between officials, chivalrous courage, conspiracy and danger, short-lived heroes, and long-term love. Due to the need for artistic creation, the historical figures in the book were all changed names.
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The book," A Husband's Wife's Favor Is Virtuous ", was an ancient romance novel written by Du Mei. The general plot of this novel was:

In the flourishing age of the Great Tang, two families of equal status in Jingdou would form an in-law. Marriage was often ordered by parents and arranged by matchmakers. Gu Huai and Shu Yanwan became husband and wife under such circumstances. However, he did not expect an accident to blind Gu Huai. Shu Yanwan changed her name and pretended to be a servant to take care of the male lead. In the days they spent together, Gu Huai's temper had changed from fiery to harmonious with Shu Yanwan. He had fallen in love with Shu Yanwan without even realizing it. The two of them had many misunderstandings. When the truth was revealed, would Shu Yanwan's efforts be rewarded? What was the ending of their relationship?