There are three things that cannot be hidden: cough, poverty, and love. Where did this sentence come from?

The origin of this sentence is uncertain, but according to some online novels and social media discussions, it may have appeared in the beginning of a novel. At present, there was no conclusive evidence to show where this sentence came from.

This sentence came from 'Dream of the Red Chamber' written by Cao Xueqin, a novelist during the Qianlong period of the Qing Dynasty. In the novel, Cao Xueqin used this sentence to describe the relationship between the novel and the official history, indicating that the novel could be used as a supplement and extension of history but could not replace the official history.

I'm not sure where the sentence you're referring to comes from. Please provide more context or relevant information so that I can help you better.

I'm not sure which sentence you're referring to. Please provide more context or information so that I can better help you answer your questions.

This sentence came from the mainland of China "Time is a useful list". The original text was: "Companion is the most long-lasting confession. Everyone needs to be with themselves. The road of life is lonely and long, and they need someone to accompany and support each other."

This sentence came from the first trilogy of the the mainland of China trilogy, The Three-Body Problem. The original text was: " Companion is the longest confession of love, and loyalty is the firmest promise."

This sentence came from the 26th chapter of the the mainland of China of The Return of the Condor Heroes. The original text was: " Companion is the longest confession. The enemy of an enemy is a friend, and the friend of a friend is a friend. Although Guo Jing and Huang Rong have gone through many hardships, they have always supported each other and never abandoned each other. This is true love."

This sentence came from the Chinese online novel,"The Unbearable Lightness of Life." The character's name was "The Weight of Lightness." The novel told a story about time travel. The protagonist experienced all kinds of life through different eras and different worlds. In the novel, the " light and heavy " was a character with special abilities that could sense all kinds of people and things in the world and make corresponding choices through their own thoughts and judgments. This sentence was a reflection and emotion of the various things in the world.

This sentence came from a novel," I stole the roses ", by Xiao Ding. This novel was a modern urban novel about the various setbacks and contradictions that the protagonist Duan Feng encountered in his life and work, as well as the emotional entanglements in his heart. This sentence expressed the love of the protagonist Duan Feng for the heroine Yang Xin. Although he stole Yang Xin's roses, his feelings for Yang Xin were real.

This sentence was said by the protagonist Xiao Yan in the novel 'Battle Through the Skies' when he was sighing about the strength and greatness of mankind.