As early as the early Meiji period, Japan put forward the policy of "vigorously enriching its armaments and showing its national power overseas", and then gradually established the "mainland policy" of aggression and expansion to China and North Korea. Following the "Jianghua Island Incident" in which Japanese warships invaded Jianghua Island in 1875, Japan constantly used every opportunity to invade North Korea. After the Sino-Japanese War of 1894-1895, Japan forced the Qing government to sign the treaty of shimonoseki, and put Korea under the direct rule of Japan. 1897, Li Xi, korean king was renamed the Korean Empire. 19 10 On August 22nd, the Japanese government forced the Korean Empire to sign the Korea-Japan Merger Treaty through a series of military coercion and political blackmail. The treaty declared that the North Korean emperor "voluntarily" handed over sovereignty to the Japanese emperor, while Japan protected its ancestral temple and property and incorporated the Lee family into the Japanese royal family. Japan established the Governor's Office as the highest governing body on the Korean Peninsula. Since then, the Korean peninsula has been completely colonized by Japan. By the end of World War II in 1945, Japan had colonized the Korean peninsula for 36 years.

During this period, the Japanese banned and burned books in an attempt to destroy the Korean national consciousness. They carried out the policy of national cultural extinction against Koreans, completely depriving them of their history and language. In order to strengthen the education of enslavement, the Governor-General's Office has formulated the imperial subjects' oath with the content of "We are subjects of the Great Japanese Empire" and "We in Qi Xin work together to be loyal to His Majesty the Emperor", forcing ordinary people to read aloud every day, carrying out brainwashing education among the Korean people and promoting the worship of the Japanese Emperor. The Governor's Office has also enacted the infamous "Thought Correction Law", which treats Koreans with a little patriotic consciousness as "thought criminals" and ruthlessly attacks them. What's more, the Japanese forced the Koreans to "create surnames" to cut off the last link between the Korean people and the past. For the people on the Korean peninsula, the 36-year history of mental and physical pain is a sad memory that can never be forgotten.

Dokdo sovereignty dispute:

Dokdo (called Bamboo Island in Japan) is two islands and reefs located in the Sea of Japan (called "East Sea" in Korea). Steep and rocky, the area is not big, and I am not interested in it. However, if Dokdo is classified as a country, the vast exclusive economic zone around it will have rich fishery rights and seabed resources. This is the basic reason why Korea and Japan compete for Dokdo.

Both countries claimed to have jurisdiction over Dokdo in history, but in modern times, they announced that it was included in the scope of sovereignty. After World War II, Dokdo was actually controlled by South Korea. However, Japan claimed that the sovereignty it gave up did not include Dokdo in the subsequent peace treaty between Japan and South Korea. Since then, South Korea has been asked to return the sovereignty of Dokdo to Japan, and even several times it intends to let the International Court of Justice make a ruling, but South Korea has always rejected Japan's request. The issue of Dokdo has been shelved between the two countries, but since the 20th century, with the resurgence of nationalism in various countries, the dispute over Dokdo between the two countries has heated up again. Generally speaking, there are great similarities between the Dokdo dispute and the Diaoyu Islands dispute.