椭圆方程公式编程

A moment of greed for marriage

Emperor Wu of Jin always gave tribute to Shan Tao and Shan Shao. Xie Taifu asked his sons and daughters about this, and the cavalry replied, "It should be because those who want it are not many, and those who give it will forget about it."

The Great Police

A worm from the star

When Han Kangbo was a few years old, his family was extremely poor. During the severe cold weather, he could only afford a jacket. The mother, Lady Yin, made it herself and asked Kang Bo to hold the iron. She said to Kang Bo, "Put on the quilt and make the scarf again soon." The child said, "It is enough. There is no need to make the scarf again." The mother asked why. He replied, "There is fire in the iron and the handle is hot. Now that I'm wearing chopsticks and clothes, the bottom should also be warm, so there is no need for ears." His mother was very surprised and knew that it was a national instrument.

Night Maze

When the main cup was served, please set up the horses. Each horse was straight to its count. One horse followed two horses to celebrate. The celebration ceremony said, "Three horses are ready, please celebrate more horses." Both the host and the guest said, "Yes." When the main cup was served, please clear the horses.

Order of Late Spring

My Infinite Battlefield

Zengzi asked, "When the burial leads to the grave, if the sun is eclipsed, will there be changes? Or not?" Confucius said, "In the past, I followed Lao Dan to help with the burial in Xiangdang. When we reached the grave, the sun was eclipsed. Lao Dan said, 'Qiu! Stop the coffin, stand on the right side of the road, stop crying and wait for changes.' After daybreak, he turned back and went on. He said, 'It is the etiquette.' When the burial was reversed, Qiu asked, 'The coffin cannot be reversed. If the sun is eclipsed, how can we go if we don't know how late it will be?' Lao Dan said, 'The princes go to the emperor's court, and leave the sacrifice at the sun; the officials go to the emperor's court, and leave the sacrifice at the sun. The coffin does not leave early and does not stay late. Only criminals and those who go to the funeral of their parents go on the journey when they see the stars! The sun is eclipsed, how do you know that the stars are not visible? Moreover, a gentleman practices etiquette and does not take people's relatives as his concern. 'I heard Lao Dan say this.