Sichuan's governor Yu Jie adopts the plan…
1236 CE
Sichuan's governor Yu Jie adopts the plan of the brothers Ran Jin and Ran Pu to fortify important locations in mountainous areas, like Diaoyucheng (modern Hechuan/Sichuan).
From this point, Yue Jie will be able to hold Sichuan for a further ten years.