During the Qianlong period, British businessmen james flint and james flint were sent to Ningbo, China, intending to open a trading port in Ningbo. At that time, Ningbo's trade activities were too frequent, and Qianlong was worried that Ningbo would become the second Macao, so he could only do trade in Guangdong and could not go to Ningbo again. James flint thought it was unfair. He didn't know the ban of Qing Dynasty, so he handed a piece of paper to Gan Long. Finally, the man he accused pushed him in front of Gan Long. As a result, Gan Long was furious and executed Liu Ya, who helped james flint write a complaint.

James flint, then a small clerk in the British East Indies, was later sent to Ningbo for development. After he went to Ningbo, he found that the tax there was very low and the local officials were very enthusiastic, so he got along well in Ningbo, Zhejiang.

Later, Qianlong went down to the south of the Yangtze River and found that Ningbo's trade activities were very frequent. At that time, Gan Long was very worried. Will Ningbo become the second Macao? At that time, all foreign businessmen were ordered to go back to Guangzhou to do business. I can't go to Zhejiang again.

James flint thinks it is not easy to do business in Guangdong. So he still wants to go back to Ningbo to do trade. At that time, james flint didn't know the ban of the Qing Dynasty, so he wrote a strong paper and handed it to Gan Long through the relationship. Huang has many demands in this powerful document. First of all, Guangzhou's taxes are too high, there are many corrupt officials, and business is not good.

Emperor Qianlong received a strong piece of paper from foreigners. Of course, he wants to check it. Emperor Qianlong found an official in Guangzhou, but Guangzhou officials sued james flint, saying that james flint wanted to disobey Qianlong's orders and still did business in Ningbo. As a result, Ganlong was very angry. Because this foreign businessman will never come to China, the person who helped him write the form was executed.