In the fourth year of Daoguang's reign (1824), due to the breach of the Gaojiayan embankment in Hongze Lake, a large amount of lake water leaked out, causing the water level of the Grand Canal from Gaoyou and Baoying to Qingjiangpu in Jiangsu to drop sharply, and the water tankers ran aground. The capital's grain roads were cut off and it was in danger of running out of grain. After hearing the report, Daoguang was extremely horrified and ordered Zhang Wenhao, the governor of Nanhe, to be dismissed from his post and go to the scene in shackles to show the public. After receiving the advice of Minister Qishan and Tao Shu on shipping, Daoguang overcame all opinions and firmly supported the change of traditional canal transportation and the thorough implementation of shipping. With Tao Shu's strong promotion, shipping achieved great success. Punishing illegal salt smuggling and generating fiscal revenue all benefited from Daoguang's ability to correctly select and use officials like Tao Shu. Just as Daoguang warned Tao Shu: "I see that you are straightforward and brave in doing things, so I gave you the important task of Liangjiang." Daoguang also encouraged him: first, don't be afraid of offending others, second, don't be afraid of suffering and being involved, third, get rid of all old habits and pay attention to ethics. River engineering, salt work. Tao Shu's evaluation in the "Manuscript of Qing History" is: "He acted bravely when he saw justice, but he had no ambitions for the city." In such a difficult context with strong backlash from vested interests, Daoguang used Tao Shu in an unusual way, which shows that he has great discernment in hiring people. After Tao Shu's vigorous rectification, it turned out that the Lianghuai Salt Administration suffered a loss of 7 million taels. From the eleventh to the seventeenth year of Daoguang, the Lianghuai Salt Administration completed more than 26.4 million taels of salt and deposited more than 3 million taels of silver.