Specific policy is: By go up to below, by in and outside, will clean appliance is put inside a bucket, let it following at any time you, clean a room with the clockwise.

• 具体方针是：由上至下，由里而外，将清洁用具放在一只桶里面，让它随时跟随着你，以顺时针方向打扫房间。