There are lots of people who I admire (钦佩) in the world. Out of all of them, I admire my grandfather the most. He works for the Chinese Academy of Sciences as a geographer (地理学家). When he was young, he often traveled around the country – not for sightseeing, but for topographic surveying (地形测绘). It was a difficult and dangerous job. He had to climb many mountains with heavy equipment (设备) to draw an exact map of our country.