Filming location, Zhangze Lake......... Great cuckoo, commonly known as cuckoo... Filming location, Zhangze Lake......... Great cuckoo, commonly known as cuckoo... Filming location, Zhangze Lake......... Great cuckoo, commonly known as cuckoo... Filming location, Zhangze Lake......... Great cuckoo, commonly known as cuckoo... Filming location, Zhangze Lake......... Great cuckoo, commonly known as cuckoo... Filming location, Zhangze Lake......... Great cuckoo, commonly known as cuckoo... Filming location, Zhangze Lake......... Great cuckoo, commonly known as cuckoo... Filming location, Zhangze Lake......... Great cuckoo, commonly known as cuckoo... Filming location, Zhangze Lake......... Great cuckoo, commonly known as cuckoo... Filming location, Zhangze Lake......... Great cuckoo, commonly known as cuckoo... Filming location, Zhangze Lake......... Great cuckoo, commonly known as cuckoo...