This topic, which is both restrictive and open, seems ordinary, but it can examine students' thinking ability, especially their ability to observe and sort out life, know and think about society. It requires students to disperse their thinking, associate with each other, examine and explore the connotation of "night" from different angles, especially its symbolic and figurative significance, and choose things with similar characteristics as writing objects or describing objects. When conceiving, we can expand our thinking from the material of night itself and the relationship between night and light. Night and light, accompanied by each other, are an endless cycle of succession. Without night, there is no light, and vice versa. Night and light are the only way of life. Life's confusion, sadness, sadness, frustration and hardship, human ignorance, ignorance, evil and mysterious unknown world can all be regarded as night. Night is frightening, even frightening, but it also makes people think deeply and explore, giving people hope and expectation. After experiencing the night, we can welcome the light and feel the value of the light.