Yellow symbolizes sunshine, gold, resources and wealth.
The red flag in People's Republic of China (PRC) symbolizes the revolution. The five five-pointed stars on the national flag and their relationship symbolize the great unity of the revolutionary people under the leadership of the * * * Production Party. This star is yellow to show the light on the red earth. Each of the four small five-pointed stars has an angle facing the center of the big star, indicating unity around a center.
Extended data
In international communication, some practices of flying the national flag have been formed, which have been recognized by all countries. When the national flag is hung on a building or outdoors, it should be raised at sunrise and lowered at sunset. When it is necessary to fly the national flag to mourn, the usual practice is to lower the flag at half mast, that is, to the top of the pole first, and then to a place equivalent to one third of the length of the pole from the top. Some countries don't fly flags at half-mast, but hang black gauze above the national flag to show their condolences. ?
When raising and lowering the national flag, stand at attention and take off your hat. When the national flag is raised, it must be raised to the top of the flagpole. The national flags of both sides are hoisted. According to international practice, the right is up and the left is down. The national flags of the two countries are hung side by side, subject to the orientation of the national flag itself, with the guest national flag on the right and the national flag on the left.
Baidu encyclopedia-national flag