There is China Merchants Bank near Zhuzhou Railway Station, as shown in the picture.
The whole journey from the train station to the bank is 100 meters (about 1 minute walk)
Go west from Zhanzhan Road and go to Jianshe South Road. The destination is on the left (100 meters) and you will get to Zhuzhou Station Road branch.
Hope this helps. Mace is afraid of harming Ban Xun