translation.en: This big ship here was the one sailed in by Zheng He in the early 15th century on his great voyages around the South China Sea, the East China Sea and across the Indian Ocean to East Africa.
translation.zh: 这儿的大船 是在15世纪早期郑和 下西洋时 航行的船， 它穿过中国东海，南海 然后穿行印度洋到达东非。