Fragments of Life Record: This morning and evening near the grove where my family lived, I saw a lot of swallows flying around in the sky, sometimes flying high and sometimes flying low, in groups of three or five, with the northern autumn

Life fragment record: This morning and evening near the grove where my family lives, I saw a lot of swallows flying around in the sky, sometimes flying high and sometimes flying low, in groups of three or five, with the continuous change of the temperature in the autumn in the north, I don't know when the swallows in the north will fly back to the south? In August, the autumn breeze is cool, and you can add clothes in the morning and evening.