I need help urgently!

For four months, Mrs. Wang, who lives in Urumqi Civil Aviation Community, has heard someone knocking at the door at home every night. At first, she thought it was someone knocking at the door, but every time she opened the door, there was no one, and the sound would disturb her at night. A month ago, she found that it was actually a nest of birds living on her balcony.

On June 1 1, Mrs. Wang, who has been disturbed by birds, reported the situation to the residential property. Community members came to her house, took out the bird's nest and moved it to the big tree in the community, and sealed the hole in the outer wall of Mrs. Wang's balcony with cement. On June 12, the reporter contacted Mrs. Wang, and she said happily that she was finally relieved.

According to Mrs. Wang, she lives alone, and the knocking at the door in the middle of the night makes her feel very scared. But she never knew where the sound came from.

A month ago, her student Zhou Xiao came home and she told Zhou Xiao about it. After looking around, Zhou Xiao found a bird's nest on her balcony.

Zhou Xiao opened the heating cover wrapped on her balcony and found a bird's nest in the gap near the heating. Two birds in the nest flew out of the hole in the balcony wall after seeing people, but the birds flew back at night.

Mrs. Wang said that the hole in the concrete wall of the balcony was the original air conditioning pipe. Later, when it was renovated, the hole in the wall was not blocked. Who knows that this originally unblocked hole has become a passage for birds to settle down on her balcony.