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grasscarp, mon carp, catfish, silver carp, as well as bluntsnout bream and giantsalamander the are rare in north china. big fish head is the specialty of sandlake. the weight of a big fish head can be ten to twenty kilos. it is so big,that just its head can fill up a big pot.now we’ve observed a small building in the east, that’s bird island, whichiis the resting place of 98 different bird species. the birds are all migrants,and from may to septermber is the best time to observe them. studies have shownthat the nature reserve is home to million birds, some of which areprotected species. now we e to the birdwatching tower, wichis is 18 metershigh and is located 20 meters from bird island. we can see tens of thousands, ofbirds from the halfsealed bridwatching tower. if we us the telescope here orour own binoculars, we can clearly observe the birds’behavior.