Level five.
Wind power classification: Wind power is divided into 12 levels according to intensity.
Level 0 is called calm, and the characteristic on land is smoke rising straight up.
Level 1 is called soft wind, which is characterized by smoke indicating the wind direction and leaves shaking slightly.
Level 2 is called light wind. It is characterized by the feeling of wind on the face, leaves rustling slightly, flags starting to flutter, and tall grass starting to shake.
Level 3 is called a breeze, which is characterized by swaying leaves and twigs, unfurling flags, and swaying tall grass.
Level 4 is called gentle wind, which is characterized by blowing dust and paper from the ground, swaying tree branches, and undulating tall grass.
Level 5 is called fresh wind, which is characterized by swaying of small leafy trees, small waves on the inland water surface, and tall grass waves