What does it mean to walk to the corner every time you bend over?

"Corner cutting in case of bend" refers to cutting off the beach corner at the convex bank and setting up a bank protection project at the concave bank in order to change the direction of the mainstream, make it straighter and reduce the erosion of the mainstream on the convex bank.

When encountering a straight silted river, it is necessary to dig deep into the middle part of the dredged river bed to achieve the purpose of concentration of the mainstream, so that the river can avoid washing away the banks and destroying farmland.

"Take a shortcut when you meet a bend, and draw your heart when you meet a right" refers to Dujiangyan's principle of river management.