国际商务旅行。 (按Sylodium,  全球  进口出口  目录中)。

There are many cities strongly visited for doing business, in a mix of entertainment and business. For example, in the top cities for Business are:

Singapore:  has a highly developed market-based economy, and one of the largest ports in the world, being one of the freest economies, most innovative, most competitive, and most business-friendly.

Puerto Rico:  San Juan is the shopping and entertainment hub of the Caribbean region. Many international banks and multi-national corporations are also based there. 

The Cayman Islands: tax haven.

New York: in fact, capital of the empire.

Hong Kong: a Special Administrative Region of  China, one of the world's leading international financial centres. 

Dubai. Dubai has emerged as a cosmopolitan metropolis that has grown steadily to become a global city and a business and cultural hub of the Middle East and the Persian Gulf region.

In Sylodium (国际贸易,目录)you can advertise for free your company or your project, at the intersection of cities (and countries) you’d  desire, like  新加坡(新加坡) - 香港(中国)。迪拜(阿联酋) - 纽约(美国)。圣胡安(波多黎各) - 哈瓦那(古巴)...

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