Couplets, Taigong Weishui once fished, demanding that couplets be plain and rhyming.

Sentence: Taigong Weishui once fished.

Zixu also plays the flute in the street.

"Taigong" vs. "Zixu": The names of people are opposite, and the meanings of individual words are also opposite, not even numbers.

"Weishui" vs. "Street": noun duality, even number.

"Zeng" and "Ye": Adverbs are dual and even.

"Fishing" and "playing the flute": the verb is opposite to the name, and the level is consistent with the level.

Tai Gong Wei Shui Zeng Fishing: The Shang and Zhou Dynasties were tyrannical, and Zhou Wenwang was determined to overthrow the tyranny. Jiang Taigong Ziya was ordered by her master to help King Wen. But Jiang Ziya felt that he had been half a century, and he had no friendship with King Wen, so it was difficult to gain the appreciation of King Wen. So on the way back to Beijing, King Wen fished without bait with a straight hook on one side of the river. King Wen saw it and thought it was a strange man. So I took the initiative to talk to him and found that this is really a useful talent, so I booked it. Later, Jiang Ziya helped King Wen and his son overthrow the rule of Shang and Zhou Dynasties and established the Zhou Dynasty.

"Zixu also played the street flute": During the Spring and Autumn Period, King Chu Ping attacked the Wu family. When Wu Zixu got the news, he fled from Chu and played flute and begged for a living in the streets of Wu. Later, he was found and recommended to assist the king of Wu in attacking Chu.