1, swimming is prohibited without permission.

2. You are not allowed to swim with others without authorization.

You are not allowed to swim without parents or teachers.

You are not allowed to swim in unfamiliar waters.

5, are not allowed to swim in the waters without safety facilities and ambulance personnel.

6. Non-aqueous students are not allowed to go into the water for rescue without authorization.

Self-help methods when drowning:

1, don't panic, call for help immediately when you find someone around you.

2. Relax your whole body, let your body float on the water, head out of the water, kick the water with your feet to prevent physical loss and wait for rescue.

When your body sinks, you can press your palm down.

If you have a sudden cramp in the water and can't land, you should call for help immediately. If there is no one around, you can take a deep breath and dive into the water, straighten your cramped legs and pull your toes up with your hands to relieve cramps.