[2] The Tongkou joins the Fu River which is a tributary of the Yangtze.
The Jian River flows through Beichuan Qiang Autonomous County, Sichuan.
The 2008 Sichuan earthquake caused a landslide dam on the river which created Tangjiashan Lake.
[3] More than 100,000 people were evacuated downstream while a sluice was constructed.
The river went to a blood red or crimson color due to pollution.