What does Nantian mean?

The word Nantian has multiple meanings in Chinese and needs to be judged according to the context. Here are some possible explanations:

1. Southern sky: The southern sky can refer to the southern sky, especially compared with the northern sky. For example, the phrase "the starry sky in the southern sky is particularly bright" means that the stars in the southern night sky look brighter.

2. Southern Constellation: Southern Constellation refers to the constellation that can be seen in the southern hemisphere of the earth. These constellations can only be observed in the southern hemisphere or near the equator, such as Carina, Flies and Southern Cross.

3. The worse gate: The worse gate is a concept in ancient myths and religious buildings in China, which usually refers to the gate guarding the south. In some literature, film and television works and games, the worse door is the entrance to heaven.

4. Nantian Information Industry Co., Ltd.: This is an IT company in China, which mainly provides software and information services. In this case, Nantian is a proper noun to refer to this company.

Please judge the meaning of the word Nantianyi in the context according to the specific context.