A large lake is the most important wintering place for migratory birds  In recent years, the lake has experienced problems such as early dry water period and prolonged dry water period  Water levels are too low during dry periods, and fish are reduced, affecting wintering birds
Falling water levels during dry periods can be met with soaring bird prices, luring poachers and opening doors of convenience
 Some experts suggest that the lake's river channel should be built sluices, by controlling the water level during the dry period, increase the living space of fish in the lake area, to protect winter migratory birds