Wanpaoshan used to be a small village located north of Changchun, Manchuria. The town was marshy and alongside Itung river. Japanese Empire had at the time taken power over Koreans. Some Koreans decided to lease a large piece of land from a Chinese broker with the intention of irrigation practices. In preparation for the irrigation, they dug a ditch some kilometers along but extended from the Itung River to a piece of land that was exclusive of what they had leased and was at the time occupied by the local Chinese farmers. On seeing this, local Chinese farmers protested by reporting the activity to the Wanpaoshan local authorities. At this time, a considerable length of the ditch had already been dug which called for action to be taken. Police were dispatched, and the Koreans were ordered to terminate the project and leave the area immediately. On the other hand, the Imperial Japanese Consul from Changchun also sent Japanese consular police for the Koreans protection. The collision between the Japanese and Chinese authorities based in the city called for an agreement point that the matter needed joint investigation.
Wanpaoshan Incident- Joint investigation needed time to lunch and complete and the Chinese farmers got impatient. Four hundred local Chinese farmers who were whose lands were cut by the ditch decided to take matters in their own hands, armed with pikes and agricultural tools. Their main aim was to drive the Koreans away however they also filled the most substantial part of the ditch. As the incident took place, Japanese consular police tried to disperse the group while protecting the Koreans farmers by firing rifles. Luckily, no casualties were recorded, and Chinese farmers withdrew. Japanese police had to guard the project until the Koreans farmers were able to finalize on digging the ditch and dam along the Itung River.
Anti-Chinese riots in Korea incident- the incident happened in Pyongyang, Korea as a result of the Wanpaoshan Incident. Anti-Chinese riots were severe as opposed to the Wanpaoshan Incident and even had to be published in both Japanese and Korean newspapers. The riots started at Incheon on July 3 and spread all over Korea cities. Chinese authorities claimed that one hundred and forty-six lives were lost, five hundred and forty-six wounded and properties of great value destroyed with July 5 as a day that worst rioting happened in Pyongyang. The Chinese authorities also lamented that the authorities in Japanese did not take precautions to protect Chinese lives and properties and also failed to prohibit the publishing of inflammatory accounts. In defense, Japanese authorities claimed that the riots were random outbursts that were settled as soon as they could and also gave compensation to the families that were bereaved.
Anti-Korean sentiment in China incident- in response to the Anti-Chinese riots, riots by Chinese against Koreans erupted in China. The hatred and ethnicity among Koreans and Chinese grew dramatically. According to an article published by the New York Times, in Jilin alone, ten thousand Koreans were brutally killed by the Chinese ethnic groups. Several Korean houses were also burnt down and looted in the province. In Supingkai, anti-Korean riot claimed three hundred lives. May 1931, Chinese boycotted Japanese-made products as a way of resistance.
Results- the situation was worse and called for Japanese and Chinese authorities to come up with ways to resolve the situation. On the one hand, Chinese felt that Koreans broke the law by leasing land outside of Gando District according to Gando Convention. On the other hand, maintained that since Koreans were Japanese subjects, they had the right to lease land all over South Manchuria and that the Koreans were in good faith apart from the Chinese broker. Koreans farmers remained.