2.？ Royal salute is an upgraded salute made by imitating ancient guns, which is widely used in large-scale activities such as opening ceremony, wedding etiquette and foundation laying ceremony.
3. Car salute is to gather several salutes together to make a turret, which is called car salute when it is placed in the car. Mainly used in urban and rural elderly longevity, old people died, children were born and so on.