My new understanding of the word 10 is: it is difficult to travel [lǐxíng] (wéi nán) on the first floor (céng).

High-rise building with frost (gāo lóu )( báI Shuāng)

P27

2. 1) There is a fox foraging in the grass, two beautiful butterflies are flying behind it, and a lovely ladybug is flying to a big tree to rest!

2) This is an underwater world, and two beautiful little goldfish swim happily between the aquatic plants.

3) It was one morning when a little dragonfly went out to play. It flew against the morning sun, and finally it found a beautiful blooming flower, what a beautiful flower!

P30 The water in the river is very clear, because the grass holds the soil on the bank tightly, and the water in the river is very clean. The grass turned green because the river gave it enough water.