Light pollution in Hong Kong means that there are too many bright lights that shine at night and cover up the dark sky. This happens because there are many tall buildings and street lights in the city that emit a lot of light.
When there is too much light at night, it can make it hard for people and animals to sleep. It can also confuse animals like birds and insects, who use the stars and moon to navigate.
In Hong Kong, the light pollution is so bad that it can be difficult to see stars in the night sky. This can make it hard for astronomers and stargazers who want to observe the universe.
One way to reduce light pollution is to use lights that are not too bright and pointed downwards, so they light up streets and sidewalks without shining up into the sky. Some cities also have rules about turning off unnecessary lights at night to reduce light pollution.
Overall, light pollution in Hong Kong is a problem because it can affect people, animals, and the environment. It is important to find ways to reduce it to make the city a healthier and more pleasant place to live.