Abstract:Longtan Lake park inlet is now named Dragon Gate. It feeds the whole lake. Located in the east corner of the lake, near the moat. The river flows into the lake through the Dragon Gate of the underground tunnel.? To prevent the sluice from being exposed, we adopt the waterside pavilion architecture.? The front is the hall and the back is the room, the front hall is used for leisure and sightseeing, and the back room is the motor operation room of the sluice. Achieves the effect of killing two birds with one stone.