In order to eliminate opium that was prevailing at that time, the government introduced a licensing system for smoking opium and a monopoly of opium to gradually increase the tax and to stop the issue of new licenses for opium, thus succeeding to get rid of opium from Taiwan (Policy to phase out opium).
流行していた阿片を撲滅すべく、阿片吸引を免許制とし、また阿片を専売制にして段階的に税を上げ、また新規の阿片免許を発行しないことで阿片を追放することにも成功した（阿片漸禁策）。