After floods had reached the palace in 1238 and 1243, Trần Thái Tông ordered every lộ to build dykes along the rivers from their sources to the sea, the 'cauldron-handle' system; the same year a canal was cut through the hills of Thanh Hóa.
Construction
The Đỉnh Nhĩ (quai vạc) dykes
- 1248
- Southeast Asia