Emperor Daoguang(Mianning, 绵宁)Ⅱ

Opium had started to trickle into China during the reign of his great grandfather Emperor Yongzheng but was limited to approximately 200 boxes annually. By Emperor Qianlong's reign, the amount had increased to 1000 boxes, 4000 boxes by Jiaqing's era and more than 30,000 boxes during Daoguang's reign. He made many edicts against opium in the 1820s and 1830s, which were carried out by the famous Lin Zexu. Lin Zexu's effort to halt the spread of opium in China was quite successful, but, with the development of the First Opium War, Lin quickly fell out of favour and the Emperor Daoguang suddenly removed Lin's authority and banished him to Xinjiang.