Front and rear large inverted U-shaped doors are equipped with screen mesh, left and right side windows with curtains, and the top is equipped with a four-side screen mesh ventilation window, which realizes five-side ventilation and air circulation, and is comfortable to use in spring, summer and autumn seasons. Meanwhile, the zippers of the front and back doors and windows are designed with wrapped edges and stickers to increase durability, with return strips to serve as a reminder at night.