NEW : Prosecutors had sought the death penalty for Cheng , 43 , but the court chose to give him a lengthy prison term and a fine of 20 million won , or about $ 17,500 . 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 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 .