NEW : China says it does n't like South Korea changing its law in this area . Chinese fishermen clashed with South Korean coast guards last year . The captain of the Chinese boat stabbed a coast guard officer to death . A South Korean court has sentenced the captain to five years in prison for murder .
NEW : China says it does n't accept South Korea applying its law in this area . Chinese fishermen clashed with South Korean coast guards last year . The captain of the Chinese boat stabbed a coast guard officer to death . A South Korean court has sentenced the captain to 30 years in prison for murder .