For 500 years, When Zheng He's figure disappeared into the closed country gate, nine world powers gradually moved to the world stage. And one by one staged a different history of rise and fa... Read allFor 500 years, When Zheng He's figure disappeared into the closed country gate, nine world powers gradually moved to the world stage. And one by one staged a different history of rise and fall.For 500 years, When Zheng He's figure disappeared into the closed country gate, nine world powers gradually moved to the world stage. And one by one staged a different history of rise and fall.