Kao and his friend An Sheng-chi were also able to convince the owners of five fishing districts to donate the districts. In 1989 a village meeting was held, and a plan to close off the river was unanimously approved.
高正勝和友人安勝吉也說服了五個魚區所有權人，捐出魚區，並在民國七十八年舉辦村民大會，獲得了一致的通過，並展開封溪的計劃。