100-year-old clock of Jianghan Customs House | 百年塔钟见证城市发展

　　The century-old clock of the Jianghan Customs House has witnessed the great changes of Wuhan ever since it was made in the U.S. in 1923 and shipped to Wuhan.

　　江汉关的塔钟距今已有百年。塔钟由美国一家公司制造于1923年，并运抵武汉。

　　The clock was installed by the Wuhan Hengdali Watch Company and has been maintained by the company ever since. The traditional 23.1-meter mechanical clock was replaced in 2000 by a GPS electronic clock to ensure accurate time and simplify maintenance. In turn, that clock was replaced in October 2022 by a Beidou atomic clock which ensures an error of less than one second in 3 billion years.

　　塔钟由武汉亨达利钟表公司派人安装，此后也一直由该公司维护保养。2000年，江汉关塔钟由传统的23.1米高的机械钟变成了GPS电子钟，确保时间准确，也便于维护。2022年10月，江汉关博物馆又把GPS电子钟换成北斗原子钟，30亿年误差不到一秒。

　　Inspecting clock of Jianghan Customs House Photo by Ren Yong

　　Nowadays, the tower clock has become an inseparable part of Wuhan's collective memory and a must-see landmark for out-of-towners.

　　如今，江汉关的塔钟已成为武汉人记忆中不可分割的一部分，也是很多外地人来武汉打卡的地标。

　　(Edited by Zheng Xiaoan)