SYDNEY, March 25 (Reuters) - New Zealand Foreign Affairs Minister Nanaia Mahuta said on Saturday she had expressed concerns over the South China Sea and tensions in the Taiwan Strait during talks with her Chinese counterpart at the end of a visit to Beijing. China views democratically governed Taiwan as its own territory and has never renounced the option of using force to take the island under its control, and claims a large part of the South China Sea. See here for a complete list of exchanges and delays