Feishayan: It is spillway for releasing flood and silt from inner river to outer river. When the volume of water in inner river goes beyond the upper limit of influx at Baopingkou, excessive water will flow over Feishayan to outer river. At the same time, the eddy force of overflowing water helps take along the silt and sand, which in other cases would settle to the bottom. In ancient times, with no cement in use, Feishayan spillway was originally made of piles of bamboo cages filled with cobblestones. If there happened unusual big flood, Feishayan could collapse by itself, leaving water channel much clearer. Now it has been constructed in concrete.

Anlan Suspension Bridge

Anlan Suspension Bridge also called Couple's Bridge, spans 500 meters (1641 feet) long over both the inner and outer river, right above Yuzui dyke. It used to be secured by thick bamboo rope. Although it is reinforced by tight steel wire now, visitors still can have fun by swinging back and forth on the bridge while walking across.

Erwang Temple

The Erwang Temple was built to commemorate Libing and his son, who together made great contributions to the project.

Being an outstanding hydraulics engineer, Libin invented the fish-mouth style dyke. He also erected a stone man in the middle of river to act as water gauge for long-time observation of water in different seasons. He buried a stone rhino on bottom of the inner river as gage for measuring the concentration of silt and sand when dredging for annual maintenance.

An eight words inscription on a wall inside the temple sums up his experience of water-control: "Dredging the sand deeper, building the dam lower."

(Source: travelchinaguide.com)

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