Both in Japan and China a ring is put around the neck of cormorant to prevent the bird from swallowing the fish, but in China a cormorant is not tied to a rope and comes back to ujo by itself, which is different from that in Japan.
魚を飲み込めないように鵜の喉に輪を装着するのは日本も中国も同じだが、中国では日本のように鵜を綱に繋がず、魚を捕らえた鵜は自発的に鵜匠の元に戻ってくる。