The terracotta warriors have guarded  the Qin Shihuang Tomb for over 2,000 years. The construction of the tomb started in 247 BC, and it took 36 years to complete. There are thousands of pottery figures of warriors and horses in this magnificent tomb. The museum is located  five kilometers east of Xi'an, in Lintong County. The Sun Yat-sen Memorial Hall in Guangzhou was built in memory of Dr Sun Yat-sen. The Hall is a beautiful building in the style  of a Chinese palace. It can seat an audience of 5, 000, but not a single pillar is found inside. In front of the Hall stands a bronze statue of Dr Sun Yat-sen. The Potala Palace in Lhasa was built in the seventh century. However, the construction of today's buildings began in 1645. It took three years to complete . The Potala Palace is thirteen stories  high and has more than 1,000 rooms. To help _ the buildings, only a few people are admitted each day. The construction of the Qin Shihuang Tomb completed in   _  .
247 BC 36 BC 283 BC 211 BC