Many places in the United States have a traffic rule that you can ride a motorcycle without wearing a helmet, but you must wear sunglasses. Does that sound strange? The American logic is: if you have an accident without a helmet and get injured, it's your own responsibility. Not wanting to wear one is your freedom, but if you don't wear sunglasses, it can interfere with your vision and pose a safety risk to others... Here, because there are many people, the rule is more straightforward, only requiring helmets. Do you think this kind of regulation in the U.S. is suitable for China? Which do you think is more reasonable? $SOL