Portrait rights refer to the rights of natural persons. The national flag as an object naturally does not exist. I guess you may mean patent rights, but a country’s flag and national emblem, as political symbols of a country, do not have patent properties in themselves. Therefore, you can use it, but you should pay attention to two points when using it: 1) Most countries, including our country, have laws such as the "Flag Law", which impose restrictions on the hanging and use of the national flag; 2) Although the flag pattern itself It does not have exclusive use attributes, but a certain combination, arrangement or decoration may have been patented by others, so please check it carefully.