The jianjia is green and the white dew is like frost.
These two sentences are inspired by Jian Jia, showing a picture of autumn colors on the river: late autumn morning, the autumn water is dense, the reeds are green, the dew is full, and the crystal is like frost. This realm is slightly desolate and pathos in the pure and lonely world, so it plays a very good role in rendering the atmosphere and contrasting the mood of the persistent pursuit and elusive love described in the poem.