根据提示写一篇有关郑和的英语作文
1.It took Zheng He 28 years to lead 7 ocean journeys in total.
2.He used compasses,ocean maps and other things to help him find new places.
3.He went on his ocean journey with over 200 ships and about 27000 people each time.
4.On his journeys,the biggest ship was about 151.8 meters long and 61.6 meters wide.
5.He visited more than 30 countries and areas.
6.He made the ocean journeys in order to develop trade and friendship between China and other countries.
差不多这样就可以,不用很长,