The world's sea bridge has opened. It links Hong Kong, Macau and China. It is 55 kilometres and took 10 to build. There are special in the river to support the bridge. There is a 6.7-kilometre in the middle. This is for to sail over. The new bridge is longer than 14 Golden Gate Bridges. The bridge will cut the time between mainland China and Macau by two-and-a-half .
China's president attended the ceremony. He hopes the bridge will connect 68 million people. Up to 29,000 will cross the bridge day. A trade said the increase in goods and will benefit China. Tourists can drive across the bridge, but car owners must have a permit. Most will take a shuttle across the bridge. This will cost about $8-$10 per .