Group 1 - The exhibition "Commemorating the 620th Anniversary of Zheng He's Voyages to the West" opened at the China Maritime Museum, highlighting Zheng He's significant maritime journey that began 620 years ago [1] - A large model of the treasure ship, based on Zheng He's original vessels, is displayed prominently, showcasing its impressive four-story height and intricate internal structure [5][7] - The exhibition features over a hundred precious artifacts from the early Ming Dynasty, including a complete set of jewelry worn by noblewomen, which reflects the trade of valuable gems during Zheng He's voyages [9][10] Group 2 - Zheng He's fleet, which was the largest in the world at the time, made seven voyages between 1405 and 1433, reaching over thirty countries and regions, including East Africa [7] - The exhibition emphasizes the cultural exchange and trade relationships established through Zheng He's voyages, showcasing gifts like Ming Dynasty porcelain given to foreign dignitaries [10] - Interactive experiences allow visitors to engage with the history of Zheng He's voyages, including a digital display of the different routes taken during the expeditions [11][13] Group 3 - The museum also features various experiential spaces, such as a submarine simulation and a sailor's rest area, enhancing visitor engagement with maritime history [16] - The museum director highlights the importance of Zheng He's voyages in demonstrating China's advanced maritime technology and its contributions to global trade and openness today [18]