It is impossible to determine the author of the novel after 3000 AD because such novels rarely appear and no works have been published. If you want to know more about what happened after 3000 AD, you should read related novels or online articles to get a more accurate answer.
The author of the prose, Leisure after the Rain, was Zheng Banqiao from the Qing Dynasty. He was a famous painter, calligrapher, and writer of the Qing Dynasty. He was known as the leader of the "Eight Eccentrics of Yangzhou". His works used nature as the material to express his deep thoughts and feelings about life, nature and society, which was praised as a classic in the history of prose.
If the author of the book died, how his copyright would be dealt with would depend on the copyright agreement he signed with the bookstore before he died. If the author has a permanent transfer or authorization of the copyright in the copyright agreement, his heirs or authorized persons can continue to publish the book and enjoy the copyright income. If the copyright agreement states that the copyright can only be transferred permanently under certain conditions, the author's heir or authorized person may need to comply with this rule in order to continue publishing the book.
In addition, if the author's copyright has been converted to public copyright, anyone can publish, copy, distribute, and sell the book, including the author's heirs or authorized persons. In this case, the author's inheritance would not affect the copyright of the book.
He could recommend some novels by authors who had transmigrated, such as Daily Life with the Great Villain, I Transmigrated with the Villain, Stabilizing the Evil Villain's Ex-Husband [Transference], Redeeming a Disabled Villain [Transference], and so on. These novels told the story of the protagonist after he transmigrated to the book world, including interweaving with the villain and changing his fate.
I'm not aware of the author of the 'after you novel'. It could be an indie author whose work isn't widely known yet. Or it could be a new release that I haven't come across information about regarding the author.