By means of metaphor, the various forms of bubbles in Koizumi are vividly written, and at the same time, by means of parallelism, the descriptions are rich, dazzling the readers, as if they were there, and the bubbles are vividly written.

There is Koizumi by the pool: some are like big fish spitting water, and a bunch of small bubbles come up briskly; Some are like a string of pearls, falling down the road, just like a string of pearls lying in the water; Some people just take out a bubble, soak it for a long time, it is big and flat, and slowly, shake it with a gesture; Broken; Look, here comes another one! Several strings of small broken beads are crowded together, like a neat bead flower, white. It's ... this is much more delicious than that big spring.

Baotu Spring is a travel note written by Lao She, which describes the beautiful scenery of Baotu Spring, a famous scenic spot in Jinan, and the lines are full of the author's praise for Baotu Spring. First of all, Baotu Spring is one of the three famous scenic spots in Jinan, which highlights the position of Baotu Spring in Jinan. Then it describes the shallow and fresh spring water of Baotu Spring and the beautiful and moving gestures of Daquan and Koizumi in turn. The sentence is beautiful, vivid and poetic. The author grasped the characteristics of the scenery, described the beautiful scenery of Baotu Spring, and expressed his love and praise for nature.