The Pudu River developed with the Pudu Fault and the Xiaojiang River with Xiaojiang Fault flowed into the Kunming Basin,then formed the Dianchi Lake on 3.

• 沿普渡河断裂发育的普渡河和沿小江断裂发育的小江均汇入到昆明盆地,形成滇池,并产生厚达千米的堆积物。