Located in the Guli Town which is in the eastern of Changshu. This tower is a famous library at home a abroad. Its former name is Tianyu Room. But it changed into Tieqintongjian Tower. This tower it is a building with two gates and floors. It is municipality protected historic site now. It is the house of Qu Shaoji who was the local gentry of Jiqing and Daoguang Years. Qu Shaoji and his sone love books, they are not hesitate heavy gold to search precious ancient books and collected them in the library.