What is the most convenient way to get from Shanghai to Rennes, France?

Airplane. Rennes is the second largest city in northwest France and the capital of Brittany in the western region. Shanghai is a provincial administrative region, a municipality directly under the Central Government, a national central city, a megacity and a core city of Shanghai metropolitan area. Traveling between the two places requires crossing the Pacific Ocean and the Atlantic Ocean, but airplanes are more convenient, faster and safer. On the contrary, ships and other means of transportation are too slow.