He didn't quite understand the exact meaning of the phrase "Joy of Life crossing the green hat". In the original novel of Joy of Life, Fan Xian was a transmigrator. His life had many secrets. Fan Xian's mother, Ye Qingmei, was also a transmigrator. Ye Qingmei had a conflict with the Qing Emperor. However, if it was understood according to the term "cuckold," the television series changed some settings and weakened Fan Xian's time travel plot. Fan Xian was set as the son of Ye Qingmei and the Qing Emperor (although Ye Qingmei used the Qing Emperor to give birth to Fan Xian, Fan Xian was not really the Qing Emperor's son). If you can be more specific about the specific content of this statement, such as a plot, character relationship, or a prank concept, it will help me better answer.

Joy of Life's transmigration was about the end of the world and rebirth. Some truths were revealed in novels and television dramas. For example, zhenqi was actually nuclear radiation energy, the Temple technique that Ye Qingmei stole was used to purify the earth, and Fan Xian was a paralyzed patient in bed at the beginning of the 21st century. When he died, he had transmigrated to the world where Ye Qingmei had just been born. In addition, there was also the truth about the Qing Emperor betraying Ye Qingmei and Ye Qingmei drugging the Qing Emperor. However, the details of the transmigration and other truths had yet to be fully revealed.
The truth of Qing Yuannian's transmigration was about the end of the world and rebirth. Some truths were revealed in novels and television dramas. For example, zhenqi was actually nuclear radiation energy, the Temple exercises that Ye Qingmei stole were used to purify the earth, and Fan Xian was a patient paralyzed in bed at the beginning of the 21st century. When he died, he transmigrated into the body of Ye Qingmei's newborn son and retained his original memories. In addition, the background of the story of the celebration was after the outbreak of nuclear war, and civilization declined to prehistoric times. However, the search results did not provide a clear answer as to how Fan Xian had transmigrated.
Fan Shen had come to ancient times through the transmigration of his soul. His predecessor was Fan Shen, a young man who lived in the 21st century. Fan Shen was suffering from myalgia gravis and was facing an incurable illness. After Fan Shen's death, his soul passed into the body of the infant Fan Xian. As Fan Xian grew up, he received the training of his father and the Director of the Overwatch Council. He learned to recognize poison and use poison, as well as martial arts. He also constantly improved his martial arts through actual combat training. Thus, Fan Xian had traveled to ancient times through Fan Shen's soul.
There were three transmigrators in Joy of Life. They were Ye Qingmei, Fan Xian, and Li Chengci. Ye Qingmei used modern technology and culture to change the Qing Kingdom. She helped her sweetheart sit on the Qing Emperor's throne and gave birth to Fan Xian. Fan Xian had transmigrated to Qing Kingdom and become a baby, but he retained the memories of modern society. These transmigrators played an important role in the play and had a close relationship with the Qing Emperor and the Temple.
Celebrating Years was not a work that traveled through the modern world. Qing Yu Nian was a time-travel drama. It mainly told the story of Fan Xian and the others traveling to ancient times. Fan Xian was the male protagonist of the story. He had originally lived in the 21st century, and his soul had traveled to the Qing Dynasty. The other search results did not mention the plot of Qing Yuannian transmigrating to the modern world. Therefore, according to the information provided, I don't know if Qing Yuannian has transmigrated to the modern world.
There were a few novels that involved transmigrating to the world of Joy of Life, including Joy of Life: I Am the Protagonist, Joy of Life: Reincarnation, Joy of Life: I Am Fan Xian, Joy of Life: Killing System, Joy of Life: Xiaobai's Transmigration, etc. These novels can be read online for free on Qidian Chinese Network. Among them," Joy of Life: I Am Fan Xian " told the story of the male protagonist, Fan Xian, traveling to the world of " Joy of Life." Other than that, there were other novels that involved the plot of crossing into the world of Joy of Life. However, due to some inconsistent information between the search results, it was impossible to determine the exact answer.
" The Green Hat Series " was an anti-Japanese drama, co-starred by Kurayoshi Asako, Arai Eleven, Li Chunxiao, and Aoi Si. The drama was released in 1999, and its Douban ratings and reputation were very good. Currently, different versions of the drama can be watched on the website of Grassland People's Theater, including 720P, HD, 1080P, Blu-ray 2M, and standard definition.
I'm not sure what you mean by 'cuckold'. If you're referring to stories related to' cuckold', there are many examples in the reference materials. For example, in the story of the ancient Korea in 1479, the female protagonist Yu Yu was forced to become a concubine by the powerful Lord Bai. She had a childhood friend, Cui Zhengbin. This can be regarded as a 'cuckold'-related plot. There was also the story of Mr. Zhang from Jiangxi Province in modern times. His ex-wife cheated on his younger brother, and the son he raised for many years was not his biological son. If it was referring to other content related to the "green hat version", such as the "green hat version" in movies or games, there was not enough information to answer accurately. While waiting for the TV series, you can also click on the link below to read the classic original work of "Dafeng Nightwatchman"!
There was a novel called " From Joy of Life to Crossing the Heavens " that involved crossing the heavens and Joy of Life. The novel was written by the Governor of the Imperial Palace. It told the story of the protagonist, Fan Zui, who had been reborn and traveled to a different world. He changed the plot, changed the characters, and became stronger. The novel had 364 chapters, and the latest chapter was chapter 8.
[Celebrating Years is not a time-travel drama.] Although some people might classify it as a time-travel drama, according to the information in the search results, the drama was actually a feature film based on science fiction elements. The main character in the play, Fan Xian, did not travel back in time. Instead, he jumped into a feudal society in the future. Therefore, it could be said that " Celebrating Years " was a TV series with sci-fi elements.