If viewed from the regional scope and surrounding velocity, it has two basic characteristics of spatial unity and time continuity.
The so-called spatial uniformity refers to the fact that the markets of various countries are using modern communication technologies (telephone, telegraph, telex, etc.) to conduct foreign exchange transactions, so that they are closely connected with each other and the whole world is more and more connected, forming a unified world foreign exchange market.
The so-called time continuity refers to the alternating business hours of various foreign exchange markets in the world, forming a cyclic pattern of sequential operations.