According to Article 18 of the National Flag Law of People's Republic of China (PRC), "The national flag and its pattern shall not be used as trademarks and advertisements, nor for private funeral activities", but it is not explicitly stipulated that the national flag pattern shall not be used as the head of a natural person on social platforms.
Although it is not illegal for people to express patriotic enthusiasm by using the head of the national flag, Article 19 of the National Flag Law of People's Republic of China (PRC) clearly stipulates: "Anyone who intentionally insults the people and the national flag of China by burning, damaging, scribbling, defacing or trampling in public places shall be investigated for criminal responsibility according to law.