The world's sea bridge has opened. It links Hong Kong and China. It is 55 kilometres long and took 10 to build. Special in the support the bridge. There is a 6.7-kilometre tunnel for to sail over. The time mainland China and Macau will be cut by two-and-a-half .
China's president was at the ceremony. The will link 68 million . Up to 29,000 will cross the bridge every . A trade said the bridge will help China. Tourists can drive across the bridge, but car owners need a . Most will take a shuttle . This will cost $8-$10.
