My north, my south, spring is flooding day by day, and I only see seagulls. What does this poem mean? Please explain.

The first couplet begins with the outdoor scenery, pointing out the time and place of the guest's visit and the author's mood on the eve of the visit. "I'm in the north, I'm in the south, and spring water is flooding" makes the environment with green water rippling here very beautiful and lovely. This is the thatched cottage by the river in Chengdu. The word "Du" implies that the water of the Chunjiang River overflows, giving people a feeling of vastness. In the works of the ancients, flocks of seagulls are often the companions of hermits by the water. Their arrival "day after day" points out the tranquility of the environment and adds a secluded color to the author's life. "But see" means that the flock is lovely, but seeing other tourists is too monotonous. In this way, the author is immersed in the scenery, showing his loneliness in the leisurely Jiangcun village. This skillfully paved the way for the happy mood of the whole poem.