In front of me, this building belongs to the ship department when I was studying in Jiaotong University. At that time, there was the information room of the ship Department on the second floor. There was a friend who worked there. One person worked very clean. I had to climb the stairs to sit almost every day. For more than 20 years, when I passed in October last year, I still wondered what kind of organization was working in it. The staircase of the reference room on the second floor had been blocked by chains. Until the end of January this year, on the way from the old library to Qian Xuesen's library, I took a look at the crack in the door of this building, which turned out to be Dong Haoyun Shipping Museum. I knew there was such a museum, but I didn't expect it to be in this building.