When you have acute angina pectoris, should you choose quick-acting heart-saving pills or nitroglycerin?

According to a recent research report from the Chinese Center for Disease Control and Prevention, the proportion of coronary heart disease deaths in the total death rate among the Chinese population has increased year by year, so out-of-hospital emergency treatment for acute cardiovascular disease events is very important. So how should you save yourself from sudden acute angina pectoris? Should you choose nitroglycerin or quick-acting heart-saving pills? What is the difference between them?