Why are the advertisements on cigarette cases that "quitting smoking as soon as possible is good for health" and "quitting smoking can reduce the harm to health" all false?

Both of them are true. They are called "Early Edition" and "Quit Smoking Edition".

According to the provisions of the International Tobacco Convention, graphic warning signs of "tobacco products are harmful to health" must appear on the packaging of tobacco manufactured in any country, and there must be no less than two warning signs, and warning words should occupy no less than one-third of the packaging design area.

Our country is implemented in accordance with the minimum standards of the convention. Many foreign cigarettes, such as Marlboro, have five different warning boxes in a pack, all of which are true.