System: Zhang Moumou is a Japanese spy who will deliver intelligence tonight near the Xiaoheng Bridge pier on the north bank of the Tonghui River. Yan Jiefang will rush to the Public Security Bureau to report him that very night. ... System: At 3 PM this afternoon, Li Huaide's car broke down at the intersection of Dongzhimen and Mianhua Hutong. Yan Jiefang was passing by carrying a bucket of fish. "Deputy Factory Director Li, want to buy some fish?" ... System: At 1 PM, Banggeng stole a chicken. Yan Jiefang hurriedly collected the other one. ... System: At 3 AM, someone broke into your room... "Hey, Dad, what are you trying to do?" Yan Jiefang withdrew a stick. ... The People's Livelihood System, protecting you. Years later, Yan Bugui looked at the money his second son had earned and fell into deep thought. "I've saved my whole life, and it's not even enough for a fraction of what I earned." Yan Jiefang quickly withdrew a "Dad!" It's unrealistic to expect the Yan family to change; it's as difficult as climbing to heaven! Revenge must come at least once! Information gap! Catch the spy! Find the treasure!

In 1958, Liu Yu, a graduate of Tsinghua University, was the brightest star of the day—his thesis was published in a national journal, and the university leaders invited him to stay and teach. The entire neighborhood groveled, begging for his recommendation! But he refused the professorship, refused the offer from a large factory, and shocked everyone with his statement, "I want to work in a factory management unit!" No one knew that this "bookworm" was actually a time traveler. In his previous life, he had witnessed his parents begging for a paltry three yuan and fifty cents in their courtyard house, and fighting tooth and nail for a single grain coupon. This time, he didn't just want a good life—he wanted to change the rules of the game for this era! When his third uncle knelt and begged him to work in the steel rolling mill, he sneered, "I'm going there right now..."

Time travel + immortality + multiple daughters + free shopping abroad + entrepreneurship + decisive killing

The ages of some characters may vary slightly due to needs.

At the end of 1948, Chen You traveled to a fusion period drama.

Fortunately, he awakened the sign-in system and obtained the longevity skill.

Female protagonists such as Lou Xiao'e, Qin Huairu, Chen Xueru and others came one after another.

Everyone in the courtyard was envious and jealous, but there was nothing they could do.

Microsystems, systems basically do not appear, and will develop overseas in the medium term.

Gao Zhendong transmigrates into the world of Siheyuan (The Courtyard). As a newcomer to the quadrangle compound, he boasts an impeccable background: an exemplar of revolutionary pedigree, physically robust, strikingly handsome, and battle-hardened from military service where he earned repeated merits. With advanced university education, technical expertise, ample funds, and a system at his disposal, he possesses both the wisdom of his past life and the system's guaranteed resources—occasionally enhanced by futuristic insights from lucky draws.

Rejecting trivial pursuits and petty squabbles over trifles, he aspires to contribute meaningfully in this zealous and vibrant era. At the very least, he wishes to declare in his twilight years: "These two lifetimes have been worthwhile."

He travels back to the 1960s and becomes He Yushui's twin brother, He Yudong. He starts by graduating from police academy and on his first day of work, he obtains the Super Police God System, which rewards him as long as he catches criminals.

"Ding, congratulations to the host for successfully capturing the criminal. You have gained 130 law enforcement points, 10 jin of grain coupons, and 130 yuan in cash."

"Ding, congratulations to the host for successfully capturing the criminal. You have gained 500 law enforcement points, 10 jin of meat coupons, and 500 yuan in cash."

In order to change He Yuzhu's fate, He Yudong arrested Bang Geng, who had stolen things, and sent him to a juvenile detention center.

"Ding! Congratulations, host, you have successfully apprehended a special criminal..."

A modern-day agritourism owner is transported to the 1950s, hoping to make a modest fortune. He never expected to find himself in a courtyard filled with birds, and discovering he's actually He Yushui's cousin. Watch as the three siblings struggle to survive in this new era…

Gao Hua is reborn into a courtyard house world and works as a purchasing agent in a steel rolling mill. He unexpectedly unlocks an infinite farm system.

Can you get rich by farming?

Gao Hua's DNA has been activated.

He traveled back to the courtyard house at No. 95 Nanluoguxiang in 1951 and became He Yushan, Sha Zhu's elder brother who had returned from the army.

He initially served in the Military Control Commission in Jiaodaokou Street and Qianmen Street area, and as Deputy Minister of Public Security.

Bind to the daily intelligence system.

[Today's Intelligence: He Daqing, who lives in the courtyard at No. 95 Nanluoguxiang, is planning to flee tonight with the widow Bai Dongmei due to fabricated documents!]

[Today's Intelligence: The deaf old woman in the courtyard at No. 95 Nanluoguxiang is a remnant of the puppet Manchukuo regime and possesses a map of the city's defenses!]

[Today's Intelligence: Jia Dongxu, a fitter in the first workshop of the Red Star Steel Rolling Mill, has been suffering from chronic hunger, becoming distracted and being sucked into machine tools!]

[Today's Intelligence: The Lou family, fearing a reckoning from above, plans to pack up and flee to Hong Kong tonight!]

[Today's Intelligence: The proprietress of Xueru Silk Shop on Qianmen Street has taken a liking to you and is planning to get you drunk and make things a done deal!]

…

Relying on daily intelligence, He Yushan thrived in the 1950s.

From deputy minister to minister of the district public security department during the Military Control Commission period.

After the military control commission ended, he was promoted from director of the district police station to director of the Sijiucheng Public Security Bureau.

With the full implementation of public-private partnership, he relied on the transformation of the Red Star Steel Rolling Mill to enter the Ministry of Metallurgy!

In the 1980s, when the tide of reform came, he decided to retreat while it lasted, accumulated billions of dollars, and enjoyed a carefree life!

In 1962, Zhao Yang transmigrated to a world of traditional courtyard houses and activated the sign-in system. Besides various supplies, there were also various magically effective cards. The Eavesdropping Card: One-day duration, allows the user to eavesdrop on others' thoughts. "What? The workshop foreman is an enemy spy?" Zhao Yang immediately reported it and led a team to arrest him. Just then, Jia Zhangshi came over and started making a scene. Zhao Yang sneered, "This is an accomplice of an enemy spy; arrest the whole family!" The Lucky Card: One-day duration, grants incredible luck. The Unlucky Card: One-day duration, brings extreme bad luck. The Psychic Card: One-day duration, allows the user to talk to all beasts. The Narration Card: One-day duration, allows the user to see item descriptions.

Multiple women + sixth brother + not aggrieved + mild-mannered, no large-scale killing plot, please do not disturb if you mind! Zhang Xingguo's soul transmigrates to a fictional world and finds that this is the famous Siheyuan world. Since he's here, he might as well have some fun! He can't leave empty-handed. A small piece of intelligence every day, he plays the sixth brother in the Siheyuan world, mild-mannered, never suffers losses, and always seeks revenge. He starts by splitting off his family and establishing his own household. "At nine o'clock tonight, Yi Zhonghai and Jia Dongxu are going to the pigeon market to buy meat. They left their twenty yuan 15 meters outside the door." "There is a gold ring in the bird's nest on the big willow tree outside the North City God Temple." "The Red Flag Commune is hiding two big fat pigs and plans to find buyers." "Tomorrow at ten o'clock, a transport truck will be surrounded by villagers disguised as bandits on Miyun Avenue. Zhao Fanshi, the director of the political department of the Ministry of Metallurgy, is on board." A small piece of intelligence every day, I've been making a name for myself since the 1950s.