What's the time difference between Austria and China?

Obviously, the literal meaning of time difference is the difference of local time between two cities. What is the local tense? The earth has an autobiography every day, and the sun rises and sets every day. The time when the sun passes through the highest point of a region every day is the so-called local time in this place. A long time ago, there was no unified method to calculate local time. In order to solve the inconvenience caused by inconsistent time, the state has implemented a unified time difference system. And how is the time difference formed? The earth is round and goes around the sun. Period of revolution is a year, forming four solar terms: spring, summer, autumn and winter. The earth itself is constantly rotating, and the rotation period is 24 hours, that is, one day, the sun is stationary, so that the sun will shine on different parts of the earth with the rotation of the earth itself. Standing at a certain point on the earth, we naturally think that the sun rises and sets every day, but in fact, the sun is not moving at all, but the earth is rotating at a speed that people can't detect. We see that the sun rises because our place on the earth approaches the place where the sun shines through the rotation of the earth, and we see that the sun sets because our place leaves the place where the sun shines through the slow rotation of the earth. At this time, the sun shines in another place on the earth, and this place is daytime, and our place is night, which forms the phenomenon of alternating day and night, thus forming the time difference. As we all know, Austria is a beautiful city, located in the center of Europe, a hub connecting European countries and playing an important role in the development of European countries. The Alps pass through it and become a symbolic resource of Austria. Its capital, Vienna, is also known as the "Golden Hall". What's the time difference between Austria and China? The earth is divided into longitude and latitude. Let's start with latitude. The equator is the longest latitude, also called latitude 0. The Tropic of Cancer is in the north and the Tropic of Capricorn is in the south. In addition, the Arctic Circle is in the north and the Antarctic Circle is in the south. It can be said that latitude is an important symbol to divide the climate on the earth. The longitude changes for one hour every 15 degree, and the prime meridian is the same as the universal time. In order to facilitate people's calculation, people divide the earth into twelve regions, east and west, and the time difference of each region is one hour. China is located in the eighth district with Beijing as its capital, while Vienna, the capital of Austria, is located in the first district. It can be seen that the time difference between China and Austria is seven hours.